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One of the limiting factors in human physical performance is [#permalink]
 30 Sep 2008, 07:20
Question Stats:
66% (02:13) correct
33% (01:56) wrong based on 2 sessions
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 only way to get
oxygen into the bloodstream so that it can be absorbed bye the muscles is
through the lungs.Which of the following, if true, would serve the same function in the argument as the statement in boldface? A. the water lost in exercising can be replaced with ordinary tap water B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb C. world-class athletes turn in record performance without such water D. frequent physical exercise increases the body’s ability to take in and use oxygen E. lack of oxygen is not the only factor limiting human physical performance
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GMBA85 wrote: 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 only way to get
oxygen into the bloodstream so that it can be absorbed bye the muscles is
through the lungs.
Which of the following, if true, would serve the same function in the argument as the
statement in boldface?
A. the water lost in exercising can be replaced with ordinary tap water -> its about dissolved O2 not about water
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb -> This is correct even though bottl has O2 but no use of them since muscles wont be able to absorb hence the bottle water is useless
IMO ANSWER
C. world-class athletes turn in record performance without such water -> OOS
D. frequent physical exercise increases the body’s ability to take in and use oxygen -> this is oos
E. lack of oxygen is not the only factor limiting human physical performance -> this says still bottle water can contribute tio increase O2 absorption hence eliminate The bold Faced statement actually gives a counter premise to the given argument,again puts a limitation that even if bottle water is sold the purpose for selling is not fulfilled IMO B
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B
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b
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clear B. if bloodstream already has more oxygen than what muscle can absorb, any oxy water will not help improve physical performance.
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Hi,
I would actually go for 'C'.
I am not sure if I am correct, but I would give a reason why B does not sound ok to me...It seems very neutral to the argument. The bold sentence is weakening with a premise that goes against water sold by entrepreneurs.
Choice C actually weakens the argument with a premise that there are a lot of athletes who do not consume the water and still is a good performer.
Please reward kudos...if helpful
Regards,
Max
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Guys I think we need to do some reverse engineering now. It is A. bigfrenhead, could you try explain this to us guys?
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A makes sense only if the bold argument is known already. IF not how are you suppposed to conclude that lost water can be replaced with ordinary water without affecting oxygene absorbtion
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GMBA85 wrote: 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 only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs.
Which of the following, if true, would serve the same function in the argument as the statement in boldface?
A. the water lost in exercising can be replaced with ordinary tap water
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb
C. world-class athletes turn in record performance without such water
D. frequent physical exercise increases the body’s ability to take in and use oxygen
E. lack of oxygen is not the only factor limiting human physical performance Agree with A, which is more apealing than B. I also went to B but reversed back to A considering that if tap water can perform the same task that "SuperOXY" does, then “SuperOXY is useless. B talks about only exercising people not about all people. so A has broader application than B. Good one.
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A for me ,
Can you please tell me what is the source of this question?
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Somehow A does not appeal to me at all. It is nowhere related to physical performance or amount of oxygen. B should be the best choice. I dnt agree with OA
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ritula wrote: Somehow A does not appeal to me at all. It is nowhere related to physical performance or amount of oxygen. B should be the best choice. I dnt agree with OA I agree. Those who picked A, better explanations?? Just because tap water replaces the water lost, not super oxy does not mean any thing.
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I agree....what is wrong with B..... icandy wrote: ritula wrote: Somehow A does not appeal to me at all. It is nowhere related to physical performance or amount of oxygen. B should be the best choice. I dnt agree with OA I agree. Those who picked A, better explanations?? Just because tap water replaces the water lost, not super oxy does not mean any thing. |
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I do not agree with A. I go for B. I wonder, what is the source of this? If posters of questions would give the source of the questions, that would give more credibility to the OAs and left little place for doubt or error. 
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We need the source of this. It is clearly not an official GMAC question, because the OA is wrong. B is correct. The role of the bolded statement is to show that the "superoxy" water cannot increase "the amount of oxygen that is absorbed by the muscles from the bloodstream", which is SPECIFICALLY given as the limiting factor that this type of water is trying to address. If A is true, the water cannot increase that limiting factor, because oxygen from the water cannot get into the bloodstream and then be absorbed. Only B has the same effect, i.e., if B is true, adding more oxygen to the bloodstream (whether from water or anything else) will not increase the specific limiting factor, which is the amount that the muscles absorb. The fact that B is almost certainly NOT true in the real world is totally irrelevant to the question.
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Since the question involves how O2 is a limiting factor for one's Physical performance and the "superoxy" water in turn helps to boost the O2 in the bloodstream, the options that can replace the statement in question can be A and B.
But according to the question these bottles are sold in gymnasiums, clearly these are people who excercise, thus i believe that the Option B holds
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I vaguely recall this, but I'm pretty sure this was a gmat prep question.
From what I recall, the explanation for A was that since the bloodstream is limited in how much oxygen it can absorb (only way to get it into the body is through the lungs), it makes superOXY useless. Thus, instead of using superOXY, we can use ordinary tap water.
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OOPS! Correction to my post!! I wrote "If A is true..." in the last sentence of my second paragraph. I meant "If the bolded statement is true..." I APOLOGIZE for this confusion.
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If A is right, how can you assume that the amount of oxygen absorbed into the body is limited. It has not been said in the stimulus. If at all, I would think that the amount of oxygen absorbed should be more (since availability of oxygen is the limiting factor).
B actually has a similar analogy like the one in stimulus (an alternate explanation as to why SuperOxy may not be effective).
Any comments guys.
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