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23 Nov 2025, 23:06
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:30) correct
22%
(01:37)
wrong
based on 217
sessions
History
Date
Time
Result
Not Attempted Yet
Driving excessively fast has been demonstrated to decrease the number of miles one can drive per gallon of fuel. Gary has recently been experiencing a decrease in mileage per gallon of fuel while driving his car. This clearly proves that Gary has been driving excessively fast lately.
Which of the following statements, if true, would most seriously weaken the conclusion about Gary’s driving?
(A) Recently Gary’s speedometer has been indicating the speed of his car as lower than the car’s actual speed.
(B) Recently Gary has been driving more miles per day on average than before he began experiencing a decrease in fuel mileage.
(C) Other tests have shown that a car’s speed affects fuel mileage more than any other single factor.
(D) Before Gary began driving excessively fast his speedometer over-represented his car’s actual speed.
(E) Recently the tires on Gary’s car have been losing air pressure, and low tire air pressure is known to lower fuel mileage.
Which of the following statements, if true, would most seriously weaken the conclusion about Gary’s driving?
(A) Recently Gary’s speedometer has been indicating the speed of his car as lower than the car’s actual speed.
(B) Recently Gary has been driving more miles per day on average than before he began experiencing a decrease in fuel mileage.
(C) Other tests have shown that a car’s speed affects fuel mileage more than any other single factor.
(D) Before Gary began driving excessively fast his speedometer over-represented his car’s actual speed.
(E) Recently the tires on Gary’s car have been losing air pressure, and low tire air pressure is known to lower fuel mileage.
Updated on: 24 Nov 2025, 11:09
Originally posted by MohanKrishna535 on 24 Nov 2025, 08:41.
Last edited by MohanKrishna535 on 24 Nov 2025, 11:09, edited 1 time in total.
Last edited by MohanKrishna535 on 24 Nov 2025, 11:09, edited 1 time in total.
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For this Particular Q , You Can use the Strategy ' Presenting Facts That Go Against The Claim ' to Weaken a claim , So E is Crct
24 Nov 2025, 22:25
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Bunuel
Driving fast can decrease the number of miles one can drive per gallon of fuel.
Gary is experiencing mileage drop recently per gallon of fuel used. So, the author concludes that driving fast is the reason behind mileage drop.
We need to find the weakener statement:
(A) Recently Gary’s speedometer has been indicating the speed of his car as lower than the car’s actual speed.
If the speedometer shows a lower reading compared to the actual speed of Gary. Then, with relative to the speedometer reading, Gary is driving fast. So, we can presume that Gary was driving fastly, and thus contributing to decreased mileage per fuel used. Hence, this is a strengthening factor. Thus, wrong.
(B) Recently Gary has been driving more miles per day on average than before he began experiencing a decrease in fuel mileage.
If Gary is driving more miles than ever before, then the amount of fuel consumed to cover that distance might eventually increase. But, we are speaking about speed wrt mileage. We don’t know how fast was the distance covered, and the amount of fuel used. The factor fuel efficiency is not discussed. Hence, wrong.
(C) Other tests have shown that a car’s speed affects fuel mileage more than any other single factor.
This is a generalised test result that cars speed affects mileage more than any other single factor. If this feature has been the dominant SINGLE cause for the event to occur - then, this feature is actually a strengthening aspect, and not a weakener. Hence, wrong.
(D) Before Gary began driving excessively fast his speedometer over-represented his car’s actual speed.
The statement speaks about the past speedometer reading before he began to drive fast, information about the current scenario is not available or clear. Hence, the option seems more irrelevant.
(E) Recently the tires on Gary’s car have been losing air pressure, and low tire air pressure is known to lower fuel mileage.
Yeah, this brings a new factor into consideration - the losing pressure of tires on Gary’s car. This factor is known to bring down the fuel mileage to a much lower level. Hence, we can say it’s not the excessive speed which have attributed to mileage drop, but the lower air pressure which has caused the drop. Hence, correct.
Option E
