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Greentown's airport CR problem

Expert replies
by amysky_0205 » Wed Dec 05, 2012 6:59 am
OG13-CR#22
Only a reduction of 10 percent in the number of scheduled flights using Greentown's airport will allow the delays that are so common there to be avoided. Hevelia airstrip, 40 miles away, would, if upgraded and expanded, be an attractive alternative for fully 20 percent of the passengers using Greentown airport. Nevertheless, experts reject the claim that turning Hevelia into a full-service airport would end the chronic delays at Greentown.

Which of the following, if true, most helps to justify the experts' position?

(A) Turning Hevelia into a full-service airport would require not only substantial construction at the airport itself, but also the construction of new access highways.

(B) A second largely undeveloped airstrip close to Greentown airport would be a more attractive alternative than Hevelia for many passengers who now use Greentown.

(C) Hevelia airstrip lies in a relatively undeveloped area but would, if it became a full-service airport, be a magnet for commercial and residential development.

(D) If an airplane has to wait to land, the extra jet fuel required adds significantly to the airline's costs.

(E) Several airlines use Greentown as a regional hub, so that most flights landing at Greentown have many passengers who then take different flights to reach their final destinations.

OA: E

I deleted B and C, and not sure about A, D and E. Chose A instead.

plz explain this for me! thank u so much!
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Source: — Critical Reasoning |

by GMATGuruNY » Wed Dec 05, 2012 8:05 am
amysky_0205 wrote:OG13-CR#22
Only a reduction of 10 percent in the number of scheduled flights using Greentown's airport will allow the delays that are so common there to be avoided. Hevelia airstrip, 40 miles away, would, if upgraded and expanded, be an attractive alternative for fully 20 percent of the passengers using Greentown airport. Nevertheless, experts reject the claim that turning Hevelia into a full-service airport would end the chronic delays at Greentown.

Which of the following, if true, most helps to justify the experts' position?

(A) Turning Hevelia into a full-service airport would require not only substantial construction at the airport itself, but also the construction of new access highways.

(B) A second largely undeveloped airstrip close to Greentown airport would be a more attractive alternative than Hevelia for many passengers who now use Greentown.

(C) Hevelia airstrip lies in a relatively undeveloped area but would, if it became a full-service airport, be a magnet for commercial and residential development.

(D) If an airplane has to wait to land, the extra jet fuel required adds significantly to the airline's costs.

(E) Several airlines use Greentown as a regional hub, so that most flights landing at Greentown have many passengers who then take different flights to reach their final destinations.

OA: E

I deleted B and C, and not sure about A, D and E. Chose A instead.

plz explain this for me! thank u so much!
The experts claim that TURNING HEVELIA INTO A FULL-SERVICE AIRPORT will not end DELAYS AT GREENTOWN AIRPORT.
Answer choice E explains why:
Several airlines use Greentown as a regional hub, so that most flights landing at Greentown have many passengers who then take different flights to reach their final destinations.
Since most flights carry passengers who need to make a connecting flight at GREENTOWN, most flights will NOT be able to land at Hevelia, strengthening the conclusion that delays at Greentown will continue.

The correct answer is E.

A: Turning Hevelia into a full-service airport would require not only substantial construction at the airport itself, but also the construction of new access highways.
The passage is not about WHETHER IT'S POSSIBLE to turn Hevelia into a full-service airport but about whether the RESULT of this plan will be a reduction in delays at Greentown airport.
Eliminate A.

D: If an airplane has to wait to land, the extra jet fuel required adds significantly to the airline's costs.
This answer choice tells us nothing about whether delays at Greentown airport will be reduced.
Eliminate D.
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