* Tough CR

[Aqua]

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

[Guest]

statement in boldface?

[Guest]

aNSWER?
B. the amount of oxygen in the blood of people who are exercising is already
more than the muscle can absorb

[esledge]

Please cite the source (author) of this problem. We cannot reply until then. If no source is cited, we will have to delete the question just to be sure we are not violating someone else's copyright. Thanks!

Also, please review the other posting guidelines. The subject should be the first 5 words of the question.