Reducing speed limits neither saves lives nor protects the : GMAT Critical Reasoning (CR)
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# Reducing speed limits neither saves lives nor protects the

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Director
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Reducing speed limits neither saves lives nor protects the [#permalink]

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14 Nov 2005, 04:37
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Reducing speed limits neither saves lives nor protects the environment. This is because the more slowly a car is driven, the more time it spends on the road spewing exhaust into the air and running the risk of colliding with other vehicles.

The argumentâ€™s reasoning is flawed because the argument

(A) neglects the fact that some motorists completely ignore speed limits.
(B) Ignore the possibility of benefits from lowering speed limits other than environmental and safety benefits.
(C) Fails to consider that if speed limits are reduced, increased driving times will increase the number of cars on the road at any given time.
(D) Presumes, without providing justification, that total emissions for a given automobile trip are determined primarily by the amount of time the trip takes
(E) Presumes, without providing justification, that drivers run a significant risk of collision only if they spend a lot of time on the road.
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14 Nov 2005, 05:14
D)...

conclusion: Reducing speed limits neither saves lives nor protects the environment.

evidence: This is because the more slowly a car is driven, the more time it spends on the road spewing exhaust into the air and running the risk of colliding with other vehicles.

assumption: if a car is driven more slowly then more exhaust is in the air and the risk of collision is higher. this is a cause-effect-relation.

flaw: no justification for this relation. maybe the exhaust is primarliy cause by the starting of the car.
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14 Nov 2005, 05:24
christoph's explanation is too sufficient to elaborate anything more .Agree that it's D.
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14 Nov 2005, 23:57
D it is.
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15 Nov 2005, 11:26
yup D it is.
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15 Nov 2005, 14:29
Nicely explained Chris. OA is D!
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15 Nov 2005, 14:29
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