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Difficulty:
35%
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Question Stats:
73% (02:03) correct
27%
(02:21)
wrong
based on 187
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In the nation of Partoria, large trucks currently account for 6 percent of miles driven on Partoria's roads but are involved in 12 percent of all highway fatalities. The very largest trucks-those with three trailers-had less than a third of the accident rate of single-and double-trailer trucks. Clearly, therefore, one way for Partoria to reduce highway deaths would be to require shippers to increase their use of triple-trailer trucks.
Which of the following, if true, most seriously weakens the argument?
A. Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.
B. No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks.
C. Very few fatal collisions involving trucks in Partoria are collisions between two trucks.
D. In Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten years.
E. In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks.
Which of the following, if true, most seriously weakens the argument?
A. Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.
B. No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks.
C. Very few fatal collisions involving trucks in Partoria are collisions between two trucks.
D. In Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten years.
E. In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks.
14 Sep 2024, 22:10
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To weaken the argument effectively, we need to show that increasing the use of triple-trailer trucks would not necessarily lead to a reduction in highway deaths in Partoria.
We know that:
Conclusion: Requiring shippers to use more triple-trailer trucks would reduce highway deaths.
We need to find an answer that undermines the conclusion that increasing the use of triple-trailer trucks would reduce highway fatalities.
A. Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.
This suggests that the lower accident rate of triple-trailer trucks might be due to them operating in less risky, lightly traveled areas rather than being inherently safer. If triple-trailer trucks were used on more heavily trafficked roads, their accident rate might increase, possibly negating the proposed safety benefit. This weakens the argument by casting doubt on the idea that triple-trailer trucks are safer in general. Keep (A) as a strong contender.
B. No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks.
This statement is about restrictions on where large trucks can operate. However, it does not directly address the conclusion about whether using more triple-trailer trucks on permissible roads would reduce fatalities. This is irrelevant to the safety comparison between triple-trailer trucks and other trucks. Eliminate (B).
C. Very few fatal collisions involving trucks in Partoria are collisions between two trucks.
This choice indicates that most fatal truck-related accidents involve trucks and other vehicles, not truck-to-truck collisions. However, this information does not affect the argument about whether triple-trailer trucks are safer than single- or double-trailer trucks. This is irrelevant to the comparison of accident rates between different types of trucks. Eliminate (C).
D. In Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten years.
This provides general information about the trucking industry's safety record improving. However, it doesn't directly challenge the conclusion that more triple-trailer trucks would reduce highway fatalities. This does not address the core of the argument regarding the relative safety of triple-trailer trucks. Eliminate (D).
E. In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks.
This fact addresses the efficiency of triple-trailer trucks in terms of carrying capacity but does not directly address the safety concern raised in the argument. While it might suggest economic reasons not to favor triple-trailer trucks, it does not weaken the safety argument. Eliminate (E).
Correct Answer is (A).
We know that:
- Large trucks account for 6% of miles driven but are involved in 12% of highway fatalities.
- Triple-trailer trucks have less than one-third the accident rate of single- and double-trailer trucks.
Conclusion: Requiring shippers to use more triple-trailer trucks would reduce highway deaths.
We need to find an answer that undermines the conclusion that increasing the use of triple-trailer trucks would reduce highway fatalities.
A. Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.
This suggests that the lower accident rate of triple-trailer trucks might be due to them operating in less risky, lightly traveled areas rather than being inherently safer. If triple-trailer trucks were used on more heavily trafficked roads, their accident rate might increase, possibly negating the proposed safety benefit. This weakens the argument by casting doubt on the idea that triple-trailer trucks are safer in general. Keep (A) as a strong contender.
B. No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks.
This statement is about restrictions on where large trucks can operate. However, it does not directly address the conclusion about whether using more triple-trailer trucks on permissible roads would reduce fatalities. This is irrelevant to the safety comparison between triple-trailer trucks and other trucks. Eliminate (B).
C. Very few fatal collisions involving trucks in Partoria are collisions between two trucks.
This choice indicates that most fatal truck-related accidents involve trucks and other vehicles, not truck-to-truck collisions. However, this information does not affect the argument about whether triple-trailer trucks are safer than single- or double-trailer trucks. This is irrelevant to the comparison of accident rates between different types of trucks. Eliminate (C).
D. In Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten years.
This provides general information about the trucking industry's safety record improving. However, it doesn't directly challenge the conclusion that more triple-trailer trucks would reduce highway fatalities. This does not address the core of the argument regarding the relative safety of triple-trailer trucks. Eliminate (D).
E. In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal payload of the largest of the single-trailer trucks.
This fact addresses the efficiency of triple-trailer trucks in terms of carrying capacity but does not directly address the safety concern raised in the argument. While it might suggest economic reasons not to favor triple-trailer trucks, it does not weaken the safety argument. Eliminate (E).
Correct Answer is (A).
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