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Bunuel
In recent years shrimp harvests by commercial fishermen in the South Atlantic have declined dramatically in total weight. The decline is due primarily to competition from a growing number of recreational fishermen, how are able to net young shrimp in the estuaries where they mature.

Which of the following regulatory actions would most help increase the weight of shrimp harvests by commercial fishermen?


A. Requiring commercial fishermen to fish in estuaries

B. Limiting the total number of excursions per season for commercial fishermen

C. Requiring recreational fishermen to use large-mesh nets in their fishing

D. Putting an upper limit on the size of the shrimp recreational fishermen are allowed to catch

E. Allowing recreational fishermen to move out of estuaries into the South Atlantic


I am confused in between C & E.
Please help.
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A. Requiring commercial fishermen to fish in estuaries
-this is what they are doing. Incorrect.

B. Limiting the total number of excursions per season for commercial fishermen - this still doesn't suffice as they might increase the number of fish caught per trip.

C. Requiring recreational fishermen to use large-mesh nets in their fishing - but, the argument states they capture mature fish, and also we don't know how large they are compared to the fish size. Hence, OOS.

D. Putting an upper limit on the size of the shrimp recreational fishermen are allowed to catch - yes, this could be effective because now they won't be able to capture the mature fish from the estuaries and the fishermen would be able to capture more fish (weight) again. Keep this.

E. Allowing recreational fishermen to move out of estuaries into the South Atlantic - does this guarantee, that they won't capture shrimp ? No. We need a strict regulation.

Hence, D is best.

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Bunuel
In recent years shrimp harvests by commercial fishermen in the South Atlantic have declined dramatically in total weight. The decline is due primarily to competition from a growing number of recreational fishermen, how are able to net young shrimp in the estuaries where they mature.

Which of the following regulatory actions would most help increase the weight of shrimp harvests by commercial fishermen?


A. Requiring commercial fishermen to fish in estuaries

B. Limiting the total number of excursions per season for commercial fishermen

C. Requiring recreational fishermen to use large-mesh nets in their fishing

D. Putting an upper limit on the size of the shrimp recreational fishermen are allowed to catch

E. Allowing recreational fishermen to move out of estuaries into the South Atlantic


I am confused in between C & E.
Please help.

Its not E because allowing and moving are two different things entirely.What if the fisherman stay put..?

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C and D are contenders here.
Now just have a look on D. Putting an upper limit on size of shrimp which they can net may not going to increase in weight of hunted shrimps. Recreational fishermen are increasing, thereby increasing the weight of hunted shrimps.
Option C recommends to increase the mesh size. This will reduce the caught young shrimps by recreational fisherman. And increase the weight of shrimp caught by commercial fishermen.

I would go with C.

Please let me know if am wrong with explanation.
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Option C requires the assumption that large mesh nets are large enough for young shrimps to pass through, does GMAT require such prior technical knowledge in CR questions?
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Option C requires the assumption that large mesh nets are large enough for young shrimps to pass through, does GMAT require such prior technical knowledge in CR questions?
crimson_noise I like the question- it touches on an important principle about what the GMAT expects you to know in Critical Reasoning questions.

The Short Answer: No, you don't need technical fishing knowledge. The concept that larger mesh (bigger holes) allows smaller objects to pass through is common-sense physical reasoning, not specialized knowledge.

Why Option C Doesn't Require Technical Knowledge:

Think about it this way: You know from everyday experience that:
  • A tennis racket (small holes) won't let a tennis ball through
  • A basketball net (larger holes) lets a basketball pass through

This same principle applies here: large-mesh nets = bigger holes = smaller shrimp can escape. Pure logic application that requiring any "technical" external knowledge.

What WOULD Be "Too Technical":

Here are some examples that come in prior "technical" knowledge that the GMAT would not require you to know, unless specifically mentioned:
  • Specific mesh sizes in millimeters
  • Scientific names of shrimp species
  • Exact shrimp maturation rates
  • Technical fishing regulations

I hope clears your doubt :)
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