问题详情

According to the woman, in which way does exercise help people in their 40s and 50s？

A．It can reduce the risk of getting Alzheimer.

B．It can reduce the risk of getting cognitive impairment.

C．It can reduce the risk of getting cancer.

D．It can make them spiritually healthy.

请帮忙给出正确答案和分析，谢谢！