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Because ethylene dibromide, a chemical used to fumigate

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Because ethylene dibromide, a chemical used to fumigate [#permalink] New post 08 Dec 2009, 10:07
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71% (02:31) correct 29% (01:29) wrong based on 381 sessions
Because ethylene dibromide, a chemical used to fumigate grain, was blamed for the high rate of nerve damage suffered by people who work in grain-processing plants, many such plants switched to other chemical fumigants two years ago. Since then, however, the percentage of workers at these plants who were newly diagnosed with nerve damage has not dropped significantly. Therefore, either ethylene dibromide was wrongly blamed or else the new chemicals also cause nerve damage.

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

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause.

B. There are no chemical fumigants that are completely safe for workers in grain processing plants.

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable.

D. Workers at grain-processing plants typically continue to work there even after being diagnosed with nerve damage.

E. Workers at grain-processing plants that still use ethylene dibromide continue to have a high rate of nerve damage.
[Reveal] Spoiler: OA

Last edited by ankurgupta03 on 31 May 2014, 22:34, edited 1 time in total.
added the OA
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Re: Because ethylene dibromide [#permalink] New post 08 Dec 2009, 10:27
Because ethylene dibromide, a chemical used to fumigate grain, was blamed for the high rate of nerve damage suffered by people who work in grain-processing plants, many such plants switched to other chemical fumigants two years ago. Since then, however, the percentage of workers at these plants who were newly diagnosed with nerve damage has not dropped significantly. Therefore, either ethylene dibromide was wrongly blamed or else the new chemicals also cause nerve damage.

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

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause. - BEST ANSWER

B. There are no chemical fumigants that are completely safe for workers in grain processing plants. Irrelevant

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable. Out of Scope.

D. Workers at grain-processing plants typically continue to work there even after being diagnosed with nerve damage. - The passage talks about newly detected people. So this cannot be a factor in the % of new cases.

E. Workers at grain-processing plants that still use ethylene dibromide continue to have a high rate of nerve damage. - The passage says that the industry has stopped using ethyl dibromide. Out of Scope
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Re: Because ethylene dibromide [#permalink] New post 08 Dec 2009, 11:45
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IMO C

IF ethylene dibromide does not take two years or longer for that damage to become detectable then it is either the new chemical or ethylene dibromide that is causing the damage..

If ethylene dibromide does takes more than 2 years then the conclusion is wrong..Then the only reason for the damage is ethylene dibromide..

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Re: Because ethylene dibromide [#permalink] New post 08 Dec 2009, 13:36
IMO, Answer is C.

If it does take longer than 2 years to detect nerve damage, clearly ethy d. is causing it and the new chemical has nothing to do with it.
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Re: Because ethylene dibromide [#permalink] New post 09 Dec 2009, 00:13
OA is C. Thanks
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Re: Because ethylene dibromide [#permalink] New post 15 May 2011, 05:32
clean C,negating it crashes the conclusion.
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Re: Because ethylene dibromide [#permalink] New post 15 May 2011, 09:59
i think C it is, negation test result confirm C . but this was not easy to prephrase.
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Re: Because ethylene dibromide [#permalink] New post 16 Sep 2011, 05:42
C it is.. if ethylene dibromide takes more than 2 years to cause nerve damage..the conclusion of 'falsely blamed' would be invalid.
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Re: Because ethylene dibromide [#permalink] New post 16 Sep 2011, 08:23
Yup C clearly..
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Re: Because ethylene dibromide [#permalink] New post 18 Sep 2011, 01:27
A is the best
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Re: Because ethylene dibromide [#permalink] New post 18 Sep 2011, 10:05
IMO C
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Re: Because ethylene dibromide [#permalink] New post 18 Sep 2011, 20:14
+1 C
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Re: Because ethylene dibromide [#permalink] New post 19 Sep 2011, 02:54
C it is.
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Re: Because ethylene dibromide [#permalink] New post 27 Sep 2011, 07:06
C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable.


It's been 2 years since grain-processing plants stop using ethylene dibromide, still the nerve damage occurs. Unless the effect of ethylene dibromide lasts (and thus the damage could become detectable after 2 years), the suggestion of the wrongful blame or the new blame for new chemicals could not be valid. => Thus, C.
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Re: Because ethylene dibromide [#permalink] New post 27 Sep 2011, 08:28
bsv180985 wrote:
Because ethylene dibromide, a chemical used to fumigate grain, was blamed for the high rate of nerve damage suffered by people who work in grain-processing plants, many such plants switched to other chemical fumigants two years ago. Since then, however, the percentage of workers at these plants who were newly diagnosed with nerve damage has not dropped significantly. Therefore, either ethylene dibromide was wrongly blamed or else the new chemicals also cause nerve damage.

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

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause.

B. There are no chemical fumigants that are completely safe for workers in grain processing plants.

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable.

D. Workers at grain-processing plants typically continue to work there even after being diagnosed with nerve damage.

E. Workers at grain-processing plants that still use ethylene dibromide continue to have a high rate of nerve damage.


I always forget to apply the negation rule.
Thanks guys for the explanation.
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Re: Because ethylene dibromide [#permalink] New post 01 Nov 2011, 22:53
A is the answer.
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Re: Because ethylene dibromide, a chemical used to fumigate [#permalink] New post 16 Dec 2011, 01:09
C
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Re: Because ethylene dibromide, a chemical used to fumigate [#permalink] New post 22 Dec 2011, 11:18
C is clearly the best answer here. If it takes two years for the symptoms to become visible, then the symptoms of the use of ethylene dibromide should start becoming visible now.
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Re: Because ethylene dibromide, a chemical used to fumigate [#permalink] New post 23 Jan 2012, 06:14
IMO C. Negate and the conclusion will fall apart.
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Re: Because ethylene dibromide, a chemical used to fumigate [#permalink] New post 03 Jun 2012, 05:43
IMO C. But IMO this is not a 700 level problem. May be a 600 level.
Re: Because ethylene dibromide, a chemical used to fumigate   [#permalink] 03 Jun 2012, 05:43
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