According to Activity Theory,what Can Older Adults Do in Order

According to activity theory,what can older adults do in order to have the most psychologically and physically healthy response to old age?

A) reduce their activity and involvement in most of their social roles
B) increase their physical activity, preferably through aerobic and weight-bearing exercise
C) eliminate excessively demanding roles and save their energy for truly important roles
D) maintain the greatest possible level of activity and involvement in the greatest possible number of roles