Necessary AssumptionDiff: Easy
Logic Breakdown
Passage Summary: Robert wants speed bumps to stop speeders, but Sheila thinks that's dangerous because fast drivers might crash when they hit them.
Conclusion: Sheila concludes that installing speed bumps is a poor solution to the speeding problem.
Reasoning: Speeding drivers might crash or lose control of their cars if they encounter a speed bump while driving too fast.
Analysis: Sheila's objection only makes sense if the risk of losing control is a significant enough problem to outweigh the benefits of slowing traffic. More specifically, she assumes that drivers will actually hit these bumps at high speeds rather than slowing down in response to the warning signs Robert mentioned. If everyone slowed down before the bump, her concern about losing control would be irrelevant. Look for an assumption that suggests the danger of losing control is a realistic outcome that makes the plan 'bad' overall.
Conclusion: Sheila concludes that installing speed bumps is a poor solution to the speeding problem.
Reasoning: Speeding drivers might crash or lose control of their cars if they encounter a speed bump while driving too fast.
Analysis: Sheila's objection only makes sense if the risk of losing control is a significant enough problem to outweigh the benefits of slowing traffic. More specifically, she assumes that drivers will actually hit these bumps at high speeds rather than slowing down in response to the warning signs Robert mentioned. If everyone slowed down before the bump, her concern about losing control would be irrelevant. Look for an assumption that suggests the danger of losing control is a realistic outcome that makes the plan 'bad' overall.
Passage Stimulus
Passage Redacted
Unlock Full Passage23.Sheila's response depends on the presupposition that
Correct Answer
C
Sheila’s objection requires that some drivers will still be going too fast even with the bumps and warning signs. Negation test: If all drivers would slow to a safe speed with bumps and signs, then drivers would not “easily lose control” upon hitting them, and Sheila’s reason for calling the plan a bad idea would disappear.
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