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Since the deregulation of airlines, delays at the nation's

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Since the deregulation of airlines, delays at the nation's [#permalink] New post 07 Jul 2009, 09:27
00:00
A
B
C
D
E

Difficulty:

  25% (low)

Question Stats:

73% (02:18) correct 27% (01:30) wrong based on 302 sessions
Official Guide for GMAT Verbal Review, 2nd Edition
Practice Question
Question No.: 16
Page: 121
Difficulty:

Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.

Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?

(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.
(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.
(D) After a small mid western airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.
[Reveal] Spoiler: OA

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Re: Deregulation of airlines [#permalink] New post 07 Jul 2009, 12:26
I go with option A.

The author assumes that a primary cause for the heightened delays is the lack of unoccupied landing and takeoff slots for commercial airlines. Thus, the author argues that the best method is to increase the number of slots. However, option A gives a different reason for the delays. If it is attributed to something other than the number of slots, increasing them would not necessarily help.
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Re: Deregulation of airlines [#permalink] New post 07 Jul 2009, 22:21
bigoyal wrote:
Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.

Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?

(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.
(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.
(D) After a small midwestern airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.


I would say (A) is the strongest.

The argument makes an unspoken assumption that delays are caused by the lack of allocated takeoff/landing slots. (A) suggests entirely different causes (weather & lack of airport equipment) of the problem, which won't change regardless of how many slots are allocated to airlines.
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Re: Deregulation of airlines [#permalink] New post 08 Jul 2009, 01:49
I think it's B
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Re: Deregulation of airlines [#permalink] New post 08 Jul 2009, 02:59
I guess.. I would go with A too.
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Re: Deregulation of airlines [#permalink] New post 08 Jul 2009, 05:35
Can someone explain in detail. I am not able to understand A.
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Re: Deregulation of airlines [#permalink] New post 08 Jul 2009, 09:30
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Re: Deregulation of airlines [#permalink] New post 09 Jul 2009, 00:07
Now, Agree with A
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Re: Deregulation of airlines [#permalink] New post 23 Jul 2009, 00:55
+1 for A
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Re: Deregulation of airlines [#permalink] New post 14 Oct 2011, 03:06
"A" is correct, but why C is less preferred?
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Re: Deregulation of airlines [#permalink] New post 14 Oct 2011, 08:38
+1 for C. I thought being 60% already, commerical aircrafts do not have chance to increase.
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Re: Deregulation of airlines [#permalink] New post 16 Oct 2011, 19:19
+1 for A.

C would be taking it too far and largely irrelevant as a weakener.

At best, Even though 60 % of slots are already alloted to commercial airlines, making it 62 % is still possible and be in the realm of argument.

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Re: Deregulation of airlines [#permalink] New post 17 Oct 2011, 09:32
A wins the battel.

I was confused with C but author never mentions what did he mean by "more of the slots"
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Re: Deregulation of airlines [#permalink] New post 17 Oct 2011, 13:31
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Re: Deregulation of airlines [#permalink] New post 17 Oct 2011, 13:44
B actually supports the effectiveness of the solution. If the traffic has increased, allowing more slots for commercial airlines would reduce congestion.

A is the correct answer IMO.
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Re: Deregulation of airlines [#permalink] New post 17 Oct 2011, 17:11
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Re: Since the deregulation of airlines, delays at the nation's [#permalink] New post 30 Jun 2013, 02:02
A it is .


conclusion showing a cause for which there is an effect, now to weaken it we have to find an alternate cause for that effect.


hope it helps.
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Re: Since the deregulation of airlines, delays at the nation's [#permalink] New post 13 Dec 2013, 12:37
OA is A. But is there any difference between the term " nation's increasingly busy airports" used in argument and term " nation's busiest airports" used in correct option?

I understand that other options can easily be eliminated, but if we have option F : The major causes of delays at the nation's increasingly busy airports are bad weather and overtaxed air traffic control equipment.

What would be the answer A or F? Are we required to figure out such subtle differences in GMAT ?

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Re: Since the deregulation of airlines, delays at the nation's [#permalink] New post 16 Dec 2013, 23:26
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CARK wrote:
OA is A. But is there any difference between the term " nation's increasingly busy airports" used in argument and term " nation's busiest airports" used in correct option?

I understand that other options can easily be eliminated, but if we have option F : The major causes of delays at the nation's increasingly busy airports are bad weather and overtaxed air traffic control equipment.

What would be the answer A or F? Are we required to figure out such subtle differences in GMAT ?

Thanks

Hi CARK,

No, you will not need to figure out such difference in GMAT. Even in the current question, you are not supposed to figure out such difference. If you read the passage carefully, the conclusion talks about "busiest airports", the same as that in the correct option statement. Since our job is to weaken the conclusion, option A clearly does that by referring to "busiest airports".

As you can now think, if there were option F as you wrote, it would not be correct since it talks about "increasingly busy airports" whereas the conclusion talks about "busiest airports".

Remember in all argument questions (strengthen, weaken, evaluate, flaw), you need to have a RAZOR SHARP FOCUS on the CONCLUSION. Whatever premises say, if the conclusion is any different, then you need to pay attention to the conclusion.

Does it help?

Thanks,
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Re: Since the deregulation of airlines, delays at the nation's [#permalink] New post 30 Jun 2014, 23:35
Plan assumes that lack of enough slots causing the delay. Then i will attack this causal assumption by providing that something else is causing the delay.
Clearly A mention that it's the bad weather , not the lack of slots, is causing the problem.


(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment. Correct
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent. this says, situation is aggravated and hence doesn't attack
(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines. Adding extra slots don't help
(D) After a small mid western airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent. Strengthen
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled. restating the premise.
Re: Since the deregulation of airlines, delays at the nation's   [#permalink] 30 Jun 2014, 23:35
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