TT GWD-26-31???

Q31

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. How-

ever, 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 through-

out 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.

The answer is C, why not E???

However, that statistic would be what we would expect even if volunteering does not boost longevity

即，即使志愿者不会延长寿命，统计数字还是原样（即志愿者得生命长）

即有其他原因能使其生命长

C is that reason

E如果是压力得话，生命就不长了，就不是statistic would be what we would expect