For All the Benefits Gained from Exercise, People Generally Show

For all the benefits gained from exercise, people generally show declines in physical activity with age. Continuity theory proposes that this phenomena

A) results from the continuation of the pattern of inactivity set by past older people.
B) continues the pattern of perceiving physical activity as a young person's endeavor.
C) occurs because older people follow the same pattern of activity or inactivity in old age that they followed in middle age.
D) appears because of the overall average 1% annual decline in many human functions.