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To reduce the danger to life and property posed by major

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To reduce the danger to life and property posed by major [#permalink] New post 18 Apr 2013, 05:24
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To reduce the danger to life and property posed by major earthquakes, scientists have been investigating several techniques for giving advance warning of dangerous earthquakes. Since catfish swim erratically before earthquakes, some investigators have proposed monitoring catfish to predict dangerous earthquakes.

Which of the following, if true, most seriously undermines the usefulness of the proposal?

(A) In Japan, which is subject to frequent earthquakes, the behavior of catfish has long been associated with earthquakes.
(B) Mechanical methods for detecting earthquakes have not proved effective.
(C) Tremors lead to the release of hydrogen sulfide gas into water, thereby causing various fish and shellfish to behave erratically.
(D) Careful construction can reduce the dangers posed by earthquakes.
(E) Even very slight, fleeting tremors cause catfish to swim erratically
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Re: To reduce the danger to life and property posed by major ear [#permalink] New post 18 Apr 2013, 05:31
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To prevent damages caused by earthquakes, scientists will rely on catfish because they swim erratically before earthquakes.

Which of the following, if true, most seriously undermines the usefulness of the proposal?

We have to look for an answer that undermines the connection earthquake => movement of catfish.
E does just that:
(E) Even very slight, fleeting tremors cause catfish to swim erratically
The connection in undermined now

Initially I was quite sure of C, so I want to explain why I discarded it eventually:
(C) Tremors lead to the release of hydrogen sulfide gas into water, thereby causing various fish and shellfish to behave erratically.
The text talks about catfish and not about "various fish", we cannot say anything about catfish.
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Re: To reduce the danger to life and property posed by major ear [#permalink] New post 18 Apr 2013, 06:19
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well i think all the choices but E are helping to explain as why this plan can work
E sud be the answer coz conclusion is abt the dangerous earthquakes but E tells us that even minor tremors can cause these fish to behave erratically !! so the plan is useless
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Re: To reduce the danger to life and property posed by major [#permalink] New post 03 May 2014, 16:40
Hello from the GMAT Club VerbalBot!

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Re: To reduce the danger to life and property posed by major [#permalink] New post 04 Sep 2014, 00:10
Zarrolou wrote:
To prevent damages caused by earthquakes, scientists will rely on catfish because they swim erratically before earthquakes.

Which of the following, if true, most seriously undermines the usefulness of the proposal?

We have to look for an answer that undermines the connection earthquake => movement of catfish.
E does just that:
(E) Even very slight, fleeting tremors cause catfish to swim erratically
The connection in undermined now

Initially I was quite sure of C, so I want to explain why I discarded it eventually:
(C) Tremors lead to the release of hydrogen sulfide gas into water, thereby causing various fish and shellfish to behave erratically.
The text talks about catfish and not about "various fish", we cannot say anything about catfish.


Hi Zarr,

Choice (E) Even very slight, fleeting tremors cause catfish to swim erratically

Can't we infer that in case of dangerous earthquakes, definitely the cat fish would SWIM erratically?

And hence the proposal of monitoring the CATFISH to predict dangerous earthquakes is strengthened rather than weaken.
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Re: To reduce the danger to life and property posed by major [#permalink] New post 04 Sep 2014, 02:25
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My 2 cents, I think answer lies within the story "The Boy Who Cried Wolf" :)
Joke apart.. idea is to find a reliable solution for giving advance warning abt dangerous earthquakes to people.
Now if scientists are relying on a source, which behaves similarly in 2 different situations then how would they decide whether its time to alert ppl abt the major earthquake or not.
Hope this answered your query and didn't create further confusion :)
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Re: To reduce the danger to life and property posed by major   [#permalink] 04 Sep 2014, 02:25
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