Which of the Following Statements About Good Health and Exercise

Which of the following statements about good health and exercise in midlife is true?

A) Physical activity in midlife enhances self-efficacy and effective stress management.
B) Engaging in exercise during midlife is less positively associated with a positive outlook than in younger adults.
C) Middle-aged people who maintain an exercise regimen are not likely to perceive themselves as particularly active.
D) While good health positively affects energy and zest for life in early adulthood, it can have the opposite effect in midlife.