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Researchers have noticed that people whose blood shows

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Researchers have noticed that people whose blood shows [#permalink]

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Researchers have noticed that people whose blood shows abnormally low levels of calcium usually have laryngeal polyps, which can permanently damage vocal cords and result in partial or even total loss of voice. In order to prevent the polyps, the researchers recommend a diet high in calcium-rich foods such as dairy and green, leafy vegetables.

Which of the following, if true, most strongly suggests that it would not be advisable to follow the researchers'

(A) Dairy contains compounds that are difficult for many people to digest.
(B) Laryngeal polyps sometimes disappear without treatment.
(C) Laryngeal polyps cause a change in body chemistry that blocks the absorption of calcium.
(D) Fresh vegetables are not always available in all seasons.
(E) Low levels of calcium can sometime be remedied with vitamin pills.
[Reveal] Spoiler: OA
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Yes I agree with ucsfcsguy ... I was of the same opinion that eating diet rich in calcium will not "prevent" polyps if you already have it.

But I think the question is trying to emphasise on the reversal of cause and effect here.

It is not the calcium deficiency that causes polyps.
Polyps reduces calcium absorption (leading to the deficiency perhaps).

So the prevention and cure for polyps is not "intake of calcium rich diet" but something else. Hence it is not advisable to follow the researcher's plan because calcium deficiency is not the source of the problem. And C suggests this.

A is too general and besides I find that for strengthen/weaken questions, answer choices that have ambiguous words like 'many', 'some', 'sometimes' are generally not the correct answer choices because they indicate that the answer choice might hold true in some situations while not in others. Therefore these answer choices don't "most strongly" strengthen or weaken a conclusion. For this reason I would eliminate A.
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Re: Researchers [#permalink]

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C

Since Laryngeal polyps blocks the absorption of calcium, the diet would not be effective.

siddhans wrote:
Is this a flaw or a weaken question? How to identify this? Whats the main difference between the two ? and their approaches? How to use elimination to solve this? Please provide detailed explanation.

Researchers have noticed that people whose blood shows abnormally low levels of calcium usually have laryngeal polyps, which can permanently damage vocal cords and result in partial or even total loss of voice. In order to reduce the risk of polyps, the researchers recommend a diet high in calcium-rich foods such as dairy and green, leafy vegetables.

Which of the following, if true, most strongly suggests that following the researchers' recommendation would NOT be effective?

a)Dairy contains compounds that are difficult for many people to digest.

b)Laryngeal polyps sometimes disappear without treatment.

c)Laryngeal polyps cause a change in body chemistry that blocks the absorption of calcium.

d)Fresh vegetables are not always available in all seasons.

e)Low levels of calcium can sometimes be remedied with vitamin pills.
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Re: MGMAT CR [#permalink]

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New post 05 Aug 2011, 12:34
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carcass wrote:
thangvietnam wrote:
C declares that poly causes low calcium and weakening. C is typical causal weakener. if argument said that X creates Y, weakener can say Y creates X.
B a weakener of the type no x but y still exist.

D is correct.

the book CRITICAL REASONING BIBLE is wonderful for this causal relation.

EXCEPT question required you to read well but contains no trick answer choice and so never be 700 level question.

I agree for D

The argument says dairy and green, leafy vegetables so even if vegetables are not available the argument does not say anything about dairy.....
I think C is a better option.
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Re: Researchers have noticed that people whose blood shows [#permalink]

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navigator123 wrote:
I am wondering how the OA -
[Reveal] Spoiler:
C
could be correct???
In the Stimulus, the researchers are discussing ways to reduce the risk (i.e preventing the disease than curing the disease), but the OA provides after effects of the disease than preventing. Isn't something wrong with the OA.


Hi navigator123,

The stimulus says that low calcium causes laryngeal polyps (low calcium -> laryngeal polyps)
but if we can prove that relation b/w cause and effect are in opposite way i.e. if we prove that (laryngeal polyps -> low calcium) then the researcher's reccomendation will not be effective.
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New post 08 Oct 2006, 22:33
I think it is C
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New post 08 Oct 2006, 22:43
One more for C.
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New post 08 Oct 2006, 22:45
what if i highlight "prevent" in the question.
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New post 08 Oct 2006, 22:52
mailtheguru wrote:
what if i highlight "prevent" in the question.


I know...I know...I saw that. But the others just seemed so far away from the scope.... :?
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New post 08 Oct 2006, 23:06
Yes it is still (C).The low levels of calcium is because the disease does not allow the body to absorb calcium.

This is a cause-effect type of question where the cause and effect roles have been reversed.

Low levels of calcium-----Disease.(according to question)

But (C) says Disease-----Low levels of calcium
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New post 09 Oct 2006, 01:04
Straight C.
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New post 09 Oct 2006, 07:28
yeah..will go with C. Good catch Sangarelli :-D
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Re: CR --- Polyps [#permalink]

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New post 09 Oct 2006, 07:36
Good explanation Sangarelli.

I was also caught with the reasoning as the statement says eating foods such as dairy and green, leafy vegetables will PREVENT polyps and C assumes that the individuals already HAS the disease.
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New post 09 Oct 2006, 07:42
C 2
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New post 09 Oct 2006, 09:56
Joining the C gang. :)
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New post 09 Oct 2006, 20:10
Me too ... C it is! For the same reason as stated by Sangarelli - cause/effect scenario
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New post 10 Oct 2006, 09:29
Good one C
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New post 10 Oct 2006, 12:22
I don't like C either, because of the word "prevent" in the question.

On the other hand, A is the only other answer that remotely tries to respond to the question.

The polyps blocking absorption of calcium doesn't weaken the argument that a diet high in calcium might prevent the polyps because if you already have the polyps, why are you trying to prevent them?

The disease inhibiting you from using the prevention doesn't make any sense as you can't prevent something that has already happened.

I hate to have a dissenting opinion as so many other people have already guessed C, but I still have a funny feeling about it.
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New post 10 Oct 2006, 12:30
I go straight to A. But this SC doesn't seem to be of gmat level.
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New post 10 Oct 2006, 13:46
I just think that this is a case of a poorly worded question if C is the correct answer. Suggesting that calcium won't cure the disease (as C indicates) doesn't weaken an argument that calcium might prevent the disease. Curing and prevention are two completely different and many times unrelated issues.

They say that drinking coffee might lower the risk of colon cancer, but I'm pretty sure that drinking coffee won't cure those who already suffer from colon cancer. So does that mean that the argument for preventing cancer is weakened or invalidated? I don't think so.

I'll step off of my soapbox now. :)
  [#permalink] 10 Oct 2006, 13:46

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