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One of the limiting factors in human physical performance is the amoun

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One of the limiting factors in human physical performance is the amoun [#permalink]

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One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

(A) world-class athletes turn in record performance without such water

(B) frequent physical exercise increases the body’s ability to take in and use oxygen

(C) the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs

(D) lack of oxygen is not the only factor limiting human physical performance

(E) the water lost in exercising can be replaced with ordinary tap water

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[Reveal] Spoiler: OA

Last edited by hazelnut on 26 Oct 2017, 04:01, edited 2 times in total.
Edited the question.

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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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New post 28 Sep 2014, 08:31
What confused me with the correct answer, even though by the structure it makes most sense, is that I was looking for a sentence that would have the same meaning as the one in bold face. Since it stated that muscles cannot get more oxygen as it is, I eliminated the correct answer because it was talking about muscles absorbing oxygen, the opposite of the boldface.
So what I got from this is not to confuse "serves the same function" with "has similar meaning"
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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

A. world-class athletes turn in record performance without such water
B. frequent physical exercise increases the body’s ability to take in and use oxygen
C. the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs
D. lack of oxygen is not the only factor limiting human physical performance
E. the water lost in exercising can be replaced with ordinary tap water

(have not found a correct and/or functional topic depicting this question)
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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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New post 03 Sep 2015, 21:04
First up, the conclusion of the premise along with the bold face statement is that "SuperOXY" is not useful.

Let us jump on to the options and try to find out the one which tells us that SuperOXY is not useful.

A. world-class athletes turn in record performance without such water

Irrelevant as it brings in an additional element about which the premise is not talking
B. frequent physical exercise increases the body’s ability to take in and use oxygen
Again irrelevant. This does not give us a reason why the body cannot absorb more oxygen.
C. the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs
This tells us exactly what we are looking for. If the only way to get oxygen in the bloodstream is through lungs, then SuperOXY is not useful. Correct Answer
D. lack of oxygen is not the only factor limiting human physical performance
This is talking about an element not related to the premise.
E. the water lost in exercising can be replaced with ordinary tap water
Again, we are not talking about the oxygen here.

There is another version of this question with slight changes in the options here: one-of-the-limiting-factors-in-human-physical-performance-is-88662.html?sid=9a1e89f9dca0d5319280db223f76a226#p668800

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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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Hi AnnaKathpal,

Option C does not negate the first sentence of the argument. Lets see why.

One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. - It means that muscles can absorb oxygen from the bloodstream upto a certain threshold. If the threshold is crossed muscles cannot absorb oxygen.

Option C: the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs - Oxygen enters bloodstream through lungs. Later, muscles absorb oxygen from the bloodstream. This option does not go against the stated fact in the question.

Now, why is option C correct? If you replace the bold portion and fit in option C, it strengthens the conclusion that SuperOXY is useless in improving physical performance.

Hope it helps.

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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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New post 09 May 2016, 07:41
hello everyone is saying about weakening...
i chose different reasoning.

premise: oxy level directly propositional wit performance
premise2: oxyrich supplying water wit more oxygen content n claims to improve performance.

conclusion: it is useless.
evidence/fact: oxy only through lungs. and fact is strengthening conclusion.

so want a strenghtener n NOT a weakner.

hence B should be the ans
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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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New post 06 May 2017, 08:41
The role played by the boldface is to support the conclusion that such water would be useless in improving physical performance.
Our task is to find other premise which does the same nicely.


c. the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs
CORRECT...We can only drink this water.This excess amount of oxygen can't enter bloodstream,and thus we gain no cited benefit from this drink.

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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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New post 23 Jul 2017, 18:08
C is the best substitute.

(a) is irrelevant. this has nothing whatsoever to do with whether the water will improve performance.
analogy: world-class athletes also turn in record performances without using steroids. this fact clearly doesn't prove that steroids are useless in improving athletic performances.

(b) is irrelevant. not only does it have nothing to do with the ways in which water is absorbed, but the "increase" is not quantified at all.
in fact, ironically, the (very indirect) effect of (b) is to contribute to the argument. if frequent exercise can increase oxygen intake, then it's possible that frequent exercisers might reach a point at which the extra oxygen in the water would start helping them.
you shouldn't think that much, though. this is a very, very, very distant relationship, and correct answers are always directly related to the passage at hand.


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Re: One of the limiting factors in human physical performance is the amoun [#permalink]

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New post 17 Sep 2017, 10:16
One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

1) IDENTIFY CONCLUSION: (SUPEROXY) is USELESS in improving physical performance
2) CATEGORIZE BOLDFACE: PREMISE, STRENGTHENS CONCLUSION
3) PRE-THINK: FIND WAYS TO PROVE SUPEROXY ADDS NO VALUE TO IMPROVING PERFORMANCE


(A) world-class athletes turn in record performance without such water
- so? what if they can turn in more/better record performances with SuperOXY?

(B) frequent physical exercise increases the body’s ability to take in and use oxygen
- doesn't address SuperOXY. what if SuperOXY could help? what if it doesn't?

(C) the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs
- correct as is. if this is the case, no matter what you drink, the only way to get more oxygen is to absorb through the lungs. Therefore, SuperOXY (or any other drink) is ineffective in improving physical performance

(D) lack of oxygen is not the only factor limiting human physical performance
- we don't care about OTHER factors that could limit human physical performance

(E) the water lost in exercising can be replaced with ordinary tap water
- how does this address improving physical performance by way of adding/digesting oxygen?

Kudos please if you find this helpful :)

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Re: One of the limiting factors in human physical performance is the amoun   [#permalink] 17 Sep 2017, 10:16
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