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Which of the following most logically completes the

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Which of the following most logically completes the [#permalink]

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23 Mar 2010, 12:59
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Which of the following most logically completes the argument??
When people engage in activities that help others ,their brain releases endorphins,
the brain’s natural opiates, which induce in people a feeling of well-being. It has
been suggested that regular release of endorphins increases people’s longevity.
And a statistic on adults who regularly engage in volunteer work helping others
shows that they live longer, on average, than adults who do not volunteer. However,
that statistic would be what we would expect even if volunteering does not
boost longevity, because...

A. in the communities studied, women were much more likely to do regular
volunteer work than men were, and women tend to live longer than men do.
B. the number of young adults who do regular volunteer work is on the increase
C. the feelings of well-being induced by endorphins can, at least for a time, mask
the symptoms of various conditions and diseases, provided the symptoms are
mild.
D. it is rare for a person to keep up a regular schedule of volunteer work throughout
his or her life.
E. Some people find that keeping a commitment to do regular volunteer work
becomes a source of stress in their lives.

[spoiler]This question has been discussed on some sites; the general consensus, however, was divided along the OA (C) and option A.[/spoiler] Please discuss your choice with reasons.
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27 Mar 2010, 05:41
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I strongly disagree with the OA. In my view, A is the only choice that logically completes the argument - if women volunteer more and live longer than than men, we would expect there to be a correlation between volunteering and longevity even if volunteering itself is not the direct causal factor.

Choice C does not adequately complete complete the argument. The fact that endorphins mask MILD symptoms of various diseses wouldn't have a major impact on volunteers' lifespan. Last I checked, mild symptoms aren't frequently the cause of death.

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02 Apr 2010, 20:13
C makes no sense

OA is A
endorphins-80586.html
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04 Apr 2010, 05:54
Dinged: I selected C.
A at first seems out of scope. But it is a very good question. If anyone has doubt, look at the explanation from BIGOYAL. He/she has given a perfect reasoning. Good work Bigoyal.
Re: Brain releases endorphins   [#permalink] 04 Apr 2010, 05:54
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