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08 Oct 2006, 22:29
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
75% (01:26) correct
25%
(01:44)
wrong
based on 2895
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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’ recommendation?
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
Which of the following, if true, most strongly suggests that it would not be advisable to follow the researchers’ recommendation?
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
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.
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.
11 Apr 2021, 03:30
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mailtheguru
OFFICIAL EXPLANATION
The correct answer is C.
The researchers recommend a diet high in calcium to prevent laryngeal polyps. Why? Because people with low calcium levels usually have these polyps. But the researchers assume that the low levels of calcium cause the polyps rather than the reverse: that the polyps somehow prevent the body from absorbing calcium. So if it were true that the causal relationship was reversed, eating calcium-rich foods would not have the desired effect.
