Although most people know that exercise is good for the

Question

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.
(B) exercise is a mental, as well as physical, activity.
(C) exercise helps the brain more than it does the rest of the body.
(D) people can greatly improve their powers of concentration by exercising more often.
(E) exercise serves more than one purpose

Can anyone suggest how to approach this CR .I was confused between two options !!!

nageshshiv · Accepted Answer

There is very subtle difference between D & E

If we rephrase the Argument , then " exercise helps physical and concentration"
D - answers only concentration
E - address two points

nmohindru · Answer

I overlooked E) :stupid

B) talks about only mental and physical whereas argument also talks about better organ work so E) is better

icandy · Answer

I would say E is way too generic. more than one purpose of what???

few realize the extent to which it is valuable to the   mind (good enough to say mental activity??)   and then it goes on to explain how the brain gets better.

Most people know that it is already a physical activity. The argument just explained that its good for the mind as well. Cant we say it Exercise is a mental as well as physical activity.

spriya · Answer

OA is E,
Reason why B is wrong is that there is noting discussed about physical activity ,its just the author starts the argument to give a statement ,exercise is good for body ,then gives others +ve points of exercise....but does not prsent what activities are done mentally or physicallyto do exercise.

hence E is perfect

sonnco · Answer

gtr022001 · Answer

I think (D) uses wording that is too strong which i eliminated.

(D)"people can greatly improve"

Herqulis · Answer

Since it's a general idea que.. the approach has to be 
first, eliminate specific choices, so A and D gone
second, C gone as there is no comparison given for effect of exercise on different parts of body
now you have B or E

B could be an ans but its not a logically correct statement, exercise itself is not a mental activity, it is a physical activity only that keeps your brain active, Hence serves the purpose of keeping brain more active

that is E, your final answer

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grakesh · Answer

What is wrong with option D ? Can someone explain clearly ?

Zarrolou · Answer

(D) people can greatly improve their powers of concentration by exercising more often.

D is a case of "too strong" answer IMO.
This means that the idea behind is correct, but is too extreme.

The idea of D is correct (people improve their concentration) but can we say that they do so "greatly"?
The text says "creating a higher capacity for concentration."

Hope this helps, let me know

madhukaramar · Answer

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.

ConfusedSEA · Answer

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.
-ignores the importance of physical benefit

(B) exercise is a mental, as well as physical, activity.
- AS WELL AS signifies that importance of exercise as a physical activity is lower than that of mental. GMAT Sentence Correction explains the differences between "AND" and "AS WELL AS"

(C) exercise helps the brain more than it does the rest of the body.
- no comparison on which impact is stronger

(D) people can greatly improve their powers of concentration by exercising more often.
-ignores the importance of physical benefit

(E) exercise serves more than one purpose
-simple summary but covers everything in the argument. Correct

rishab0507 · Answer

My take on your elimination : In B elimination is more on based of mentioning of factors of Mental and physical health only rather than As well as and AND meaning. In CR options refining to this level may not work. B only mentions physical and mental activity whereas in question stem author uses word "organ" which not only covers physical and mental but overall body. Option E is more vast in that concept.

sharmatarun · Answer

In option B it is saying that exercise is mental as well as physical activity while in given argument it is trying to say that exercise is not only beneficial for us physically but mentally as well. Therefore E is the best option in the given options.

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Although most people know that exercise is good for the

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Although most people know that exercise is good for the

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