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# Researchers have noticed that people whose blood shows

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Senior Manager
Joined: 31 May 2006
Posts: 368
Location: Phoenix AZ
Researchers have noticed that people whose blood shows [#permalink]

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08 Oct 2006, 22:29
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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
Senior Manager
Joined: 08 Jun 2006
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08 Oct 2006, 22:33
I think it is C
VP
Joined: 21 Mar 2006
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08 Oct 2006, 22:43
One more for C.
Senior Manager
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08 Oct 2006, 22:45
what if i highlight "prevent" in the question.
VP
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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....
Senior Manager
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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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Director
Joined: 18 Jul 2006
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09 Oct 2006, 01:04
Straight C.
VP
Joined: 21 Aug 2006
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09 Oct 2006, 07:28
yeah..will go with C. Good catch Sangarelli
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Senior Manager
Joined: 13 Sep 2006
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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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09 Oct 2006, 07:42
C 2
Senior Manager
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09 Oct 2006, 09:56
Joining the C gang.
Manager
Joined: 28 Feb 2006
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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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Director
Joined: 17 Jul 2006
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10 Oct 2006, 09:29
Good one C
Intern
Joined: 28 Jun 2006
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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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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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10 Oct 2006, 12:37
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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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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.
Director
Joined: 02 Mar 2006
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10 Oct 2006, 14:35
Indeed C adresses the weakness of the argument, that a low level of calcium may not be the cause of the polyps.
However, the statement doesn't give any indication about the cause of the disease, so we have to consider all the possibilities.

A better question would be :
If the following are true, which of the following answer would cast the more doubt that the prescription would not be successful(something like that...). C would be a better answer.

The question with advisable is not very well formulated, I think.

If my patient could not digest something I am not sure it is effective, celarly I wouldn't prescribe it(A)

more than

If it is proven that polyps cause low level of Ca wheras the opposite is not proved, I would prescribe it or not, depending on my personnal beliefs(thus not C).
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10 Oct 2006, 18:31
The OA is C. I guess the deal for ppl who selected A is "Don't think too much" , and i happen to fall into that bucket.
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10 Oct 2006, 18:43
Straight C even though a lot of people have answered before me.

Reason: Laryngeal polyps prevent calcium absorption. So, low calcium levels are an effect of laryngeal polyps, rather than a cause.
10 Oct 2006, 18:43

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