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GMAT Exam pack 2 - CR

This topic has 1 expert reply and 2 member replies

GMAT Exam pack 2 - CR

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Hello BTG

Would appreciate som explanation to finding the right answer in the following question.

Thanks in advance.
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Nalmed Province's plan is to reduce highway congestion by expanding the commuter rail system, so giving more people the option of traveling by train. When a recent opinion poll presented this plan to province residents, they overwhelmingly favored it, even though they knew that enacting the plan would mean substantial tax increases. Consequently, the plan, if enacted, is very likely to succeed, because if people are prepared to pay, they expect to reap the benefit.

The inference made from the poll results is most vulnerable to criticism on the grounds that

it overlooks the possibility that once the highways are consistently uncongested, some commuters might have no motivation to switch from using their car to using the rail system

the favorable responses collected are entirely consistent with every one of those respondents expecting that it would be others who, by using the rail system, would ease highway congestion

those respondents who opposed the plan might nevertheless become users of the rail system as a result of its expansion

those respondents who opposed the plan might oppose it for reasons other than the tax increase required to carry it out

residents responding to the poll are likely to overestimate the tax increase they themselves will experience if the proposed expansion occurs
Premise: When a recent opinion poll presented the plan to province residents, they overwhelmingly favored it.
Conclusion: The plan to expand the rail system will succeed in reducing highway congestion.

This argument links the poll results to a reduction in highway congestion.
It assumes that the people in the poll will actually USE the rail system and thereby ease highway congestion.
One way to weaken the argument is to attack this assumption.

B: the favorable responses collected are entirely consistent with every one of those respondents expecting that it would be others who, by using the rail system, would ease highway congestion
Here, the people in the poll expect that OTHERS will use the rail system, invalidating the assumption that the PEOPLE IN THE POLL will use the rail system and thereby ease highway congestion.

The correct answer is B.

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Junior | Next Rank: 30 Posts Default Avatar
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The choice is between options A and B. Both , if true, will weaken the argument. B is the stronger choice because it involves every one of those respondents whereas A involves only some of them.

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A. This statement claims that once the highways are uncongested, some people might not switch to rail transport. The plan will succeed even if this statement is true, as people apart from those who won’t switch, would have the motivation to use the rail system thus reducing the congestion.
B. If each one expects others to use the train (and not themselves); they essentially negate each other's intentions, and hence no one uses the train. Hence, B is the answer.
C. This would rather strengthen the conclusion made in the argument.
D. This statement unnecessarily expands the scope of argument providing no substantial criticism to the conclusion.
E. The statement strengthens the conclusion made in the argument.

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