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To prevent harbor porpoises from getting tangled in its nets

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To prevent harbor porpoises from getting tangled in its nets [#permalink] New post 01 Apr 2012, 07:34
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Question Stats:

77% (02:02) correct 22% (00:52) wrong based on 119 sessions
To prevent harbor porpoises from getting tangled in its nets and suffocating, a fishing company installed acoustic alarms on all its boats that fish in waters off Massachusetts. The sound emitted temporarily disorients the porpoises and frightens them away. Since the installation of the alarms, the average number of porpoises caught in the company's nets has dropped from eight to one per month. The alarms, therefore, are saving the lives of harbor porpoises in those waters.

Which of the following is an assumption on which the argument depends?

A. The use of acoustic alarms increases the number of commercial fish caught by the fishing company's boats.

B. When disoriented, harbor porpoises are not significantly more likely to be killed by other boats.

C. Environmentalists advocate the use of acoustic alarms as a means of protecting the harbor porpoise population.

D. The alarms were installed at the time of year when harbor porpoises are most plentiful in the Massachusetts waters.

E. The cost of installing acoustic alarms on fishing boats is less than the cost of repairing nets damaged by harbor porpoises.
[Reveal] Spoiler: OA
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Re: Help, please, with assumption question!!! [#permalink] New post 01 Apr 2012, 07:35
HELP!
Can you explain me answers B and D?
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Re: Help, please, with assumption question!!! [#permalink] New post 01 Apr 2012, 13:12
commandos1985 wrote:
HELP!
Can you explain me answers B and D?


B is correct because it addresses the issue of alarm saving lives.

D might serve as an explanation for why the company has caught less of porpoises, but does not address the saving their lives part.
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Re: Help, please, with assumption question!!! [#permalink] New post 03 Apr 2012, 02:00
Except B rest options are just irrelevant
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Re: Help, please, with assumption question!!! [#permalink] New post 03 Apr 2012, 02:47
Plz give more explanations.........still not clear why not D.......

Doesn't saved from being suffocated means aved from being killed.
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Re: Help, please, with assumption question!!! [#permalink] New post 09 Apr 2012, 22:56
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I doubt if this is a text from GMAT.
I feel comfortable to assume that such a question is a creation of GMAT Tutors/ Private Organizations that prepare these questions for students benefit.

If this is infact a GMAT question, i expect it to be more precise as in option B.
There is an ambiguity here, other boats?? -- what are other boats?? -- 1)other boats of the same company or 2)other boats of different company that did not install the alarms??

Depending on the above, i would go with D if 1, i.e the other boats are mentioned as bpats of the same company, bcoz in such a case, B looses its importance as the average is already mentioned down to 1 from 8, so D is better as it supports the facts with its info.

But if other boats mean boats of other companies, I would go with B........ again if it says that other boats have no alarms installed on it.

This is my opinion, and if there are any experts around here, please thrash me if you feel my reasoning is wrong.
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Re: To prevent harbor porpoises from getting tangled in its nets [#permalink] New post 15 Apr 2014, 22:17
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: To prevent harbor porpoises from getting tangled in its nets [#permalink] New post 16 Apr 2014, 10:23
The right choice would be "B" and here's why:
When the option says "other boats" it definitely mean boats of other organizations which have not installed alarms, since the porpoises would scatter away and even if some of the "other" boats were of the same organization they would have alarms installed again scattering them away.. but now the ones which don't have such alarms would cause a problem.
Re: To prevent harbor porpoises from getting tangled in its nets   [#permalink] 16 Apr 2014, 10:23
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To prevent harbor porpoises from getting tangled in its nets

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