Answer: (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.
Step-by-step explanation:
Endorphins are the chemicals that are produced naturally inside the body by the nervous system. This is a natural response for coping up the stress and pain. These chemicals are called as happiness boosters and pain reliever. They work similar to the drugs called as opioids.
According to the expectation, the adults who volunteer are expected to live longer but this argument may fail if only the women volunteer and tend to live longer than man. Although the fact is already known that the women are comparatively weak in strength and endurance and participate less in such activities.