Air travel is becoming increasingly more dangerous. In the : GMAT Critical Reasoning (CR)
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Air travel is becoming increasingly more dangerous. In the

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Air travel is becoming increasingly more dangerous. In the [#permalink]

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03 Feb 2008, 00:46
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Air travel is becoming increasingly more dangerous. In the last year there have been seven major collisions resulting in over 700 deaths, more deaths than in any previous year. Which statement, if true, would most weaken the argument above?

(A) Since the volume of air traffic has been increasing all the time, an increase in the number of deaths due to collisions does not necessarily mean greater danger.

(B) The increase in collisions can be explained by statistical coincidence, hijackings, and unusual weather.

(C) Mortality per passenger mile is lower for air travel than for any kind of surface transportation.

(D) The increase in deaths due to collision in air travel has proceeded at a rate identical to that for deaths in all other major forms of transportation.

(E) Last year the average number of passengers per flown plane was significantly lower than that of previous years.
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03 Feb 2008, 02:25
Conclusion: Air travel is becoming increasingly more dangerous.
Any answer choice that introduces air travel is comparatively safer weaken the argument.

(A) Since the volume of air traffic has been increasing all the time, an increase in the number of deaths due to collisions does not necessarily mean greater danger. [Enticing – but answer choice covers “all the time”- not years covered in the argument. However, argument comparing last year and previous year – eliminate it]

(B) The increase in collisions can be explained by statistical coincidence, hijackings, and unusual weather. [How we explain collisions does not weaken the argument – eliminate it]

(C) Mortality per passenger mile is lower for air travel than for any kind of surface transportation.[Argument has no references to other mode of transportations – eliminate it]

(D) The increase in deaths due to collision in air travel has proceeded at a rate identical to that for deaths in all other major forms of transportation. [Argument has no references to other mode of transportations – eliminate it]

(E) Last year the average number of passengers per flown plane was significantly lower than that of previous years.[Hold it – this implies there were quite a high number flight last year compare to previous year]

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03 Feb 2008, 11:05
A
I think E strengthens it. If passengers was significantly lower still we had so many accidents, , means air travel is becoming dangerous.
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03 Feb 2008, 11:12
im with you on A
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03 Feb 2008, 11:31
pmenon wrote:
im with you on A

I Like A the best out of the lot, so I go with A,

However, does "Volume of air traffic" mean more people traveling? Is it safe to assume that. For example, if 100 people traveled in 20 planes, and 2 died because of crashs. Now the same 100 people travel in 40 planes, lots more traffic, and therefore more planes crash. And say 3 died. Doesn't that mean its more dangerous due to increased traffic.

??

could be interpreted each way, but I suppose A points that out anyways "does not necessarily mean.."

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04 Feb 2008, 00:08
OA is A

thanks guys.
Re: CR: Air Travel   [#permalink] 04 Feb 2008, 00:08
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