Since the introduction of low-cost airlines, delays at the nation's

Question

Since the introduction of low-cost airlines, delays at the nation's busiest airports have increased by 50 percent. To combat this problem, takeoff and landing slots at the busiest airports must be re-allocated with a significant preference towards traditional airlines, or those not considered low-cost airlines, over low-cost airlines.

If true, each of the following casts doubt on the effectiveness of the solution proposed above EXCEPT

A. The primary cause of delays at the nation's busiest airports is weather-related.

B. The delays caused by traditional airlines have continually increased, while those caused by low-cost airlines have continually decreased since the introduction of low-cost airlines.

C. Low-cost airlines account for a higher proportion of the delays than do non-low-cost airlines.

D Traditional airlines already account for approximately ninety percent of all takeoff and landing slots at the nation's busiest airports, as low-cost airlines tend to fly into and out of less busy airports.

E. Low-cost airlines, on average, account for a much lower proportion of the delays than do non-low-cost airlines.

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icandoit4u · Answer

ans - option c 
we have to find an option which supports the solutions logic to the problem since its an except question. 
 C is correct  because it supports the logic as if they are causing the delays, and by reducing/reallocating their slots other non low cost airlines delays can be cut down. 
A- The primary cause of delays at the nation's busiest airports is weather-related.-  if weater is the cause then there is no use of reallcating slots since delay will be there anyways 
B- The delays caused by traditional airlines have continually increased, while those caused by low-cost airlines have continually decreased since the introduction of low-cost airlines.-  this casts doubt as low cost airlines that means are not the problem so will not support  
D- Traditional airlines already account for approximately ninety percent of all takeoff and landing slots at the nation's busiest airports, as low-cost airlines tend to fly into and out of less busy airports.-  also doest help and casts doubt since already much of the low cost airlines fly from other airports so not much difference can be made 
E- Low-cost airlines, on average, account for a much lower proportion of the delays than do non-low-cost airlines.-  this also casts doubt as doesnt address the source of the problem

Vivek1707 · Answer

A. If weather is the main cause of delays, shifting slots away from low-cost airlines is unlikely to help.
B. If traditional airlines are causing an increasing share of the delays, giving them even more slots could make the problem worse.
C.  Correct  If low-cost airlines account for  more  of the delays, then giving them fewer slots could reasonably reduce delays. This supports, rather than casts doubt on, the proposed solution.
D. If traditional airlines already control about 90% of the slots, reallocating a few more is unlikely to have much impact.
E. If low-cost airlines cause relatively fewer delays than traditional airlines, penalizing them makes little sense and weakens the proposal.

SafeRay · Answer

Agree with C.

EXCEPT trap: four choices hurt the plan, one helps it. The plan assumes low-cost airlines are a real delay problem at the busiest airports, so cutting their slots should help.

C backs that assumption: low-cost airlines cause a higher share of delays. So it does not cast doubt.

A shifts the cause to weather. B and E say traditional airlines are the worse delay source. D says low-cost barely use those busy slots anyway. All four make the reallocation look weak.

Bunuel · Answer

Official Explanation

The correct answer to this question is (C). This is a unique type of WEAKEN question, requiring the test taker to identify the one answer choice that does not provide information that refutes the conclusion that allocating more takeoff and landing slots to traditional airlines will decrease airport delays.  Choices A, B, D,  and  E  are incorrect as they provide information that refutes or weakens the conclusion.

Choice C  is the correct answer choice, which does not weaken, but in fact strengthens the conclusion. That low-cost airlines account for a higher proportion of delays than do traditional airlines suggests that reserving more spots for the traditional airlines would help to reduce the overall number of delays.

Answer: C

Since the introduction of low-cost airlines, delays at the nation's

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Since the introduction of low-cost airlines, delays at the nation's