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805+ Level|   Logical Flaw|         
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 09:43
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City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Percentage => (accidents caused by drivers ignoring traffic lights) * 100 / Total

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.

Here, others could be preventable traffic safety issues or not. Hence, not a clear choice.

B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

Here, it is suggesting that the total number itself may have increased, which means the accidents caused by drivers ignoring traffic lights may have remained the same or increased. Correct Answer.

C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.

Not Related to the accidents caused by drives ignoring traffic lights

D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.

Not Related to the accidents caused by drives ignoring traffic lights

E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.

Not Related to the accidents caused by drives ignoring traffic lights
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 09:43
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Sub-conclusion: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably.
Premise: This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues.
Main conclusion: Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Drop in accidents is related to measures taken by traffic police.

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights. If traffic police attributed preventable accidents as accidents due to other cause then assumption is flawed that drop in accidents is due to measures taken by traffic police by listening to the inquests. CORRECT

B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
Increase in accidents caused by other factors do not cause anything as it does not explain why the preventable accidents are falling. WRONG

C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
Challenging the effectiveness of method of inquests do not do anything as it does not say anything about the decrease in preventable accidents. WRONG

D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
Even if this is true, this does not explain why the preventable accidents are decreasing. WRONG

E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.
Any perception made by public do not mean that the actual data is true. This choice thus do not point out any flaw. WRONG

Correct option is A
Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 09:43
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Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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The key flaw in this argument is that the resident assumes that a decrease in the percentage of one type of accident (those caused by ignoring traffic lights) means that the police took effective action and that preventable accidents overall are decreasing.
Looking at the answer choices:
B is correct. If accidents caused by factors other than drivers ignoring traffic lights rose sharply, then the percentage of accidents caused by ignoring traffic lights could fall even if the absolute number of such accidents remained the same or even increased. This would undermine both conclusions: that the police took effective measures and that preventable accidents are decreasing.

The other options don't highlight this core flaw:
  • A deals with misreporting but doesn't address the percentage vs. absolute number issue
  • C questions how accidents are counted but doesn't address the logical leap from percentages to conclusions about police action
  • D suggests other accidents increased inquests, which doesn't address the flaw in the resident's reasoning
  • E focuses on beliefs about accident causes, which isn't relevant to the main logical flaw
The correct answer is B.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 09:55
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we need to find something that will challenge the drop due to red light
A- Statement A does that by saying the reporting is not accurate
b- this states other accidents can cause this
c,d,e- all are irrlevant
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:09
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City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.
The conclusion jumps from decreasing percentage to absolute decrease in value. This is a big hole.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
This weakens but is not a logical flaw

B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
Right answer as expected

C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
Weakens but not a logical flaw

D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
A guess but not a flaw

E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.
irrelevant

Answer: B
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:12
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  • Premise: Accidents due to ignoring traffic lights have fallen.
  • Conclusion: Therefore, traffic police must have acted on resident complaints and improved preventable traffic safety issues.
  • Further conclusion: Preventable traffic safety issues are certainly decreasing.

Logical Flaw:
The argument assumes that because one type of preventable accident decreased, all preventable accidents must be decreasing, and credits the drop to traffic police actions, without considering other possibilities.
We need an option that challenges this assumption that the decrease in the percentage of accidents due to one cause means actual improvement overall.


B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

Even if percentage of one cause went down, other causes might have increased. So total preventable accidents might not have decreased. This directly weakens the reasoning.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:12
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CONCLUSION:
Accidents “that happen due to preventable traffic safety issues are certainly decreasing.”

PREMISE and LOGIC:
The percentage of accidents “caused by drivers ignoring traffic lights has fallen considerably,”
... so the traffic police must have fixed the problem after hearing the inquests.

Option B states:
Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

This basically means that the denominator, or the total number of accidents, grew a lot, so as a result, the percentage reduced.
But a reduction in the percentage of accidents does not mean that the number of accidents reduced. So this option presents the correct logical flaw in the argument.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:28
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Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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We have to find a flaw in the argument.

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.

This is not a flaw or related to the argument. In the argument the author concludes that the " accidents that happen due to preventable traffic safety issues are certainly decreasing" and we need to find a flaw in the way this is reasoned out.

B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

Well the passage talks about percentage. So, if the total number of accidents are increasing the percentage will decrease. This could be a flaw.

C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.

Not relevant to the conclusion. We need an option that shows how the data presented in incorrect to draw the conclusion. ELimiante C.

D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.

Same as C. Not relevant to conclusion. Strike off D.

E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.

Out of scope to the conclusion we are trying to find a flaw in. We can eliminate E.

Option B is the answer.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:28
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Information given:
- City resident's argument: the % of accidents caused by drivers ignoring traffic lights fell considerably this year
- Therefore, the traffic police must have listened to recommendations and fixed preventable traffic safety issues
- So, accidents due to preventable safety issues are certainly decreasing

Question:
- Which most clearly highlights a logical flaw in the reasoning of the city resident?

Solution:
- A: In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
- It is true that the % drop might not mean the real number fell, could be misclassified.
- However, the because traffic police sometimes incorrectly attribute, does not mean a logical flaw in the reasoning of the city resident is highlighted, invalid

- B: Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
- If total accidents from other causes went up, then even if ignoring-lights accidents stayed the same, the % would drop.
- The % drop therefore doesn't guarantee the actual number of accidents dropped
- This hits the flaw in comparing % to absolute numbers, valid

- C: It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
- Describes a general doubt about data reliability
- Does not specifically explain how the % drop could be misleading

- D: The accidents caused by other factors may have increased the number of inquests made with the traffic police.
- This might affect workload, but doesn't show why the % of ignoring-lights accidents dropped misleadingly
- Does not directly explain the flaw in logic, invalid

- E: In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.
- Residents' beliefs don't affect how the police report causes
- Not relevant to the % calculation, invalid

Answer: B, Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:34
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Answer is B
The author's logic flaw here is the proportion fallacy.

The issue is:
Ignoring the decrease in traffic signal accident ratios ---> because the police heard about the need for preventable traffic safety ---> so the number of preventable traffic accidents clearly dropped.

But that's not right.
If the non-preventable ones suddenly shot up, the ratio would naturally decrease.
Let's look at the options:

A: Just questioning if the police reports are misclassified, doesn't affect the overall conclusion.
B: Points out that other types of accidents might have risen sharply, directly undermining the conclusion that "preventable accidents have overall decreased" → correct answer.
C: Doubts the source of the data for residents, doesn't challenge the core logic.
D: Says the number of inquiries might have increased, unrelated to the conclusion.
E: Says residents' perception might be wrong, but can't refute whether preventable accidents have decreased or not.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:51
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The resident makes an assumption. Drop in accidents caused by ignoring traffic lights is because police acted on the inquests made by the residents. And according to the resident, this reflects an overall drop in preventable accidents.

But:
What if the accidents caused by reason other than ignoring traffic lights increased?
We need an option that exposes this faulty causal assumption or shows that the conclusion doesn’t logically follow from the evidence.

B. "Accidents caused by factors other than ignoring lights could have risen sharply in number.."
This is directly relevant. If the number of accidents caused by reasons other than ignoring traffic lights increased, the % of the accidents caused by ignoring traffic lights would fall, without any improvement caused by the police.
So the observed decline doesn’t prove that the police took effective action.
This is a clear flaw in the argument.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 10:57
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This is a classic percentage/actual value CR question.
Statement: Percentage went down, so it means that accidents that happen due to preventable traffic safety issues are certainly decreasing.
What could be a logical flaw? Just because the percentage is going down doesn't mean that the actual number is going down because what could actually be happening is the total pool of accidents might have increased. The number of preventable accidents could have remained same, or even increased a little.

Looking through the options, B says exactly this: Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

Hence, answer is Option B
Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 11:03
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Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?




 


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This is a causal relationship passage, Cause -> Effect. Here, the cause is Police Involvement -> Decrease in traffic...cases.

Pre Thinking, Here in 1 place they are talking about relative values, and other they are talking about absolute numbers. So that can be tricky.

Lets do the POE.

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights. Irrelevant.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.Inline with prethinking, If other are on rise obvious that percentage decreases eventhough no change in absolute figure, Hold on
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year. Irrelevant
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.So what, Irrelevant
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents. Irrelevant

IMO B
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 11:07
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Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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Conclusion of the argument: accidents that happen due to preventable traffic safety issues are certainly decreasing

Reasoning provided: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably.

Percentage can decrease either when numerator decrease or denominator increase. Here, the city resident thinks the numerator decreased. What if its otherwise. That could be a flaw in reasoning.

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.

This is not how the flow of the argument is reasoned. Also, we don't know the margin of error. So, A is not a flaw. We can eliminate.

B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

CORRECT: Yes, if the number of accidents caused by drivers other than who ignore traffic light decrease, the percentage will decrease. This doesn't mean that the accidents caused by drivers who ignore traffic lights has decreased. They can remain the same. Keep.

C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.

The conclusion is not related to inquests. Hence, we can eliminate C.

D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.

Same as C. The conclusion is not related to inquests. Hence, we can eliminate D.

E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.

Cause of accidents are not the point of contention here. We are looking for an option that can bring the flaw in the way the conclusion was reasoned out.

Option B is the correct answer IMO
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 11:12
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The correct answer is (A)
Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 11:35
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Pre think:it mentioned about the percentage of accidents caused by drivers ignoring traffic lights has fallen, how about if the number of them has increased and the total accidents (caused and not caused by caused by drivers ignoring traffic lights) has increased even more significantly, so that percentage has fallen?

=> B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year: reasonable for the total number of accidents increase, so it will be perfectly same as the consideration in the pre think above.
Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 12:30
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IMO answer is B

City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Concusion of the argument is: accidents that happen due to preventable traffic safety issues are certainly decreasing BECAUSE
this year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. And the REASONING behind this is traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues.

But, if according to choice B-
Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year-

then the percentage decrease in no. of accidents caused by drivers ignoring traffic lights is not really because of the inquests made to the traffic police.
Hence the author concluding that accidents that happen due to preventable traffic safety issues are certainly decreasing is flawed because it does not take account of the fact that it might not be the inquests but increase in other accidents that has led to the decrease in the accidents caused by preventable safety issues.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 12:31
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Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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The city resident CR claims that the % of accidents of drivers ignoring traffic lights are reducing.

Reason for this reduce : the CR prepared a detailed inquest ( inquiry into reasons for unexpected death ) on Preventable Traffic Safety issues and presented the inquest report to the Traffic Police (TP). Based on the inquest, the TP was able to take steps to resolve preventable Traffic safety issues.

Since, the inquest report is solely based on Preventable traffic safety issues, accidents pertaining to other factors are not eliminated. The CR believes the accident due to preventable traffic safety are Certainly decreasing.

Beacause of X (CR inquest) ——-> Y ( decline of preventable traffic safety issue accidents) has happened.

The logical flaw here, is there can be Z which might caused Y to occur either directly or indirectly.

One such factor is Option B - Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.

This has led to the surge in accidents cases caused by other factors, which has invariably led to the decline of cases in preventable traffic deaths.

Let’s consider a simple example to understand it:

let the total cases be 100, PTS cases be 10 and other factors be 90. So 10% denotes preventable traffic issue cases.

suppose the other factor cases increase = 110 cases. While PTS remains 10, so total case = 120.

110/120 = approx 92% cases.

10/120 = 8% ( which is a decline of 2 percentage points from 10%, but the actual case figures haven’t dropped ).
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 12:41
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Bunuel
City resident: This year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably. This means that the traffic police listened to our inquests regarding preventable traffic safety issues and took the measures needed to resolve the issues. Although accidents caused by other factors will not be eliminated, accidents that happen due to preventable traffic safety issues are certainly decreasing.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

A. In reporting accidents caused due to drivers ignoring traffic light, the traffic police sometimes incorrectly attribute the accidents to a cause other than drivers ignoring traffic lights.
B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year.
C. It is possible that inquests made with the traffic police are not the most reliable way to ascertain how many accidents took place in a particular year.
D. The accidents caused by other factors may have increased the number of inquests made with the traffic police.
E. In some accidents caused due to drivers ignoring traffic light, city residents many not believe that drivers ignoring traffic lights was the cause of the accidents.


 


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This is a cause and effect type question in which effect is mentioned in first line and the cause is explained in the next one.
A. Keep, It highlights a major flaw that the incidents are mis interpreted by traffic police.
B. Irrelevant. Not concerned about increase in other type of accidents.
C. Out of scope. Not concerned about inquests.
D. Irrelevant same as option B
E. Not concerned about what city residents believe because the conclusion is based on percentage of accidents caused by drivers ignoring traffic lights.
Hence the correct answer is A.
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GMAT Club Olympics 2025 (Day 3): City resident: This year, the percent 02 Jul 2025, 12:42
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City resident: Premise: this year, the percentage of accidents caused by drivers ignoring traffic lights has fallen considerably.
Conclusion: accidents that happen due to preventable traffic safety issues are certainly decreasing.

So the resident is concluding that since % has fallen the number of accidents has reduced. But what if the accidents due to traffic lights are same but other accidents have significantly gone up, thus, pushing the % down.

Of the following, which most clearly highlights a logical flaw in the reasoning of the city resident?

B. Accidents caused by factors other than drivers ignoring traffic lights could have risen sharply in number during the relevant year. - Bingo. This highlights the FLAW
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