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Re: Although most people know that exercise is good for the
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12 Jun 2018, 03:53
Although most people know that exercise is good for the body, few realize the extent to which it is valuable to the mind. The blood circulates more rapidly after physical exertion, thus allowing all of the body’s organs to operate more efficiently. This increased activity enables the brain to receive more oxygen, thereby creating a higher capacity for concentration.
The main point in the argument above is that
(A) the greater the amount of oxygen the brain receives, the better the brain functions.
-- We are not only talking about - "greater amount of oxygen" - the oxygen needs to come from exercising. Also this one-to-one causality can't be inferred from passage.
(B) exercise is a mental, as well as physical, activity.
-- Irrelevant
(C) exercise helps the brain more than it does the rest of the body.
-- Irrelevant
(D) people can greatly improve their powers of concentration by exercising more often.
-- This is a tempting answer - but use of world greatly makes this incorrect. Passage do say - exercise more - get more oxygen to brain - can create a high capacity for concentration (Passage is not saying greatly improve)
(E) exercise serves more than one purpose
-- This is the correct choice. Exercise is good for body and brain.