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Parland s alligator population has been declining in recent Ver2

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Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 25 Mar 2016, 11:17
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Parland’s alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.

Which of the following, if true, most helps to explain the decline in the population of the fish species?

A. The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous.

B. Over the last few years, Parland’s commercial fishing enterprises have increased the number of fishing boats they use.

C. The main predator of these fish is another species of fish on which alligators also prey.

D. Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population.

E. In several neighboring countries through which Parland’s rivers also flow, alligators are at risk of extinction as a result of extensive hunting.


Edit: Similar question: LINK
Please do not merge; there are 2 different questions with the same setup text
[Reveal] Spoiler: OA

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Last edited by GMATNinjaTwo on 16 Feb 2018, 07:36, edited 4 times in total.
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 25 Mar 2016, 11:57
Alligator feed on fishes, which are consumed as food by Parlanders.
Alligator population is declining.
But number of fishes have not increased. --> This is possible if the fishes are consumed by some other animal or some other factor is causing the fishes to die out.

A. The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous. - Incorrect - Irrelevant

B. Over the last few years, Parland’s commercial fishing enterprises have increased the number of fishing boats they use. - Incorrect - If fishing boats are increased more fishes should be caught. This option doesn't help resolve the paradox.

C. The main predator of these fish is another species of fish on which alligators also prey. - Correct - Because alligator population is declining, the predator which feed on the fishes has increased. Hence the number of fishes has remained the same.

D. Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population. - Incorrect - Irrelevant

E. In several neighboring countries through which Parland’s rivers also flow, alligators are at risk of extinction as a result of extensive hunting. - Incorrect - Doesn't help to resolve the paradox.

Answer: C
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 24 Dec 2016, 06:15
Simple argument, only C demonstrate the reason for decline in the population of the fish species, even though the annual number caught for human consumption has not increased.
Answer is C.
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 10 Feb 2018, 17:11
The timer and respective answer choices are misaligned with this version of the question. The correct answer is C. As the survival rate of a predator (gator) decreases, the survival rate of a species lower on the food chain increases. Our fish just happens to be more than one peg down the ladder. More big fish lead to fewer valuable fish.
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 10 Feb 2018, 20:10
I chose option C as answer for this question. But according to the timer its incorrect.

Can experts help understand the right answer.
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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I found the question to be little different:

Parland’s alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.

Which of the following, if true, most helps to explain the decline in the population of the fish species?
A. The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous.
B. Over the last few years, Parland’s commercial fishing enterprises have increased the number of fishing boats they use.
C. Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population.
D. During Parland’s dry season, holes dug by alligators remain filled with water long enough to provide a safe place for the eggs of this fish species to hatch.
E. In several neighboring countries through which Parland’s rivers also flow, alligators are at risk of extinction as a result of extensive hunting.

Correct Answer is D
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 12 Feb 2018, 16:40
panthersarkar wrote:
I found the question to be little different:

Parland’s alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.

Which of the following, if true, most helps to explain the decline in the population of the fish species?
A. The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous.
B. Over the last few years, Parland’s commercial fishing enterprises have increased the number of fishing boats they use.
C. Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population.
D. During Parland’s dry season, holes dug by alligators remain filled with water long enough to provide a safe place for the eggs of this fish species to hatch.
E. In several neighboring countries through which Parland’s rivers also flow, alligators are at risk of extinction as a result of extensive hunting.

Correct Answer is D


The answer is not D but C. Please correct the incorrect tagging.
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 12 Feb 2018, 16:53
D cannot be the answer, the OA is C.

Kindly modify the original answer accordingly.

Thanks
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 12 Feb 2018, 20:40
Pleasd read the options first. IMO d is correct

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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 15 Feb 2018, 00:42
Hi

OE for the question set is incorrect as per OG-13th edition. It is 'C' not 'D'.

The reason for this, in my opinion, is that
- fish (declining )
- predator (declining)
- Human consumption is still.
So, we need another rationale for the declining number of fish which is not related to the predator or human consumption. The option C gives the rationale: another species of fish, which consumes the prized freshwater fish. Hence it is correct.

POE of others options as follows -

A- fishers can work in some part of lake - irrelevant
B- No of fishing boats increased - not necessary for the decline until they people on the boat catches the fish
D- Hunt alligators - do not show any correlation with the decline of fish. It may increase. Plus question tells to investigate the decline of the fish numbers not the decline of alligators
E- alligators are at risk of extinction - question tells to investigate the decline of the fish numbers not the decline of alligators
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 15 Feb 2018, 01:32
Can someone explain with certainty if the correct answer is C or D?

I think it is clearly C, as in D the alligator hunting for their skin is totally irrelevant...
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Re: Parland s alligator population has been declining in recent Ver2 [#permalink]

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New post 16 Feb 2018, 07:38
Villups wrote:
Can someone explain with certainty if the correct answer is C or D?

I think it is clearly C, as in D the alligator hunting for their skin is totally irrelevant...

The answer is indeed (C), and the OA has been updated.

There is a similar question with a different OA (refer to link in the first post).

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Re: Parland s alligator population has been declining in recent Ver2   [#permalink] 16 Feb 2018, 07:38
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