Which of the following statements about the "wear-and-tear" theory of aging is true?

A) Evidence suggests a moderate relationship between physical activity and early death.
B) Cross-cultural research supports the idea that the body eventually wears out from use.
C) Despite its benefits, exercise in adulthood is linked to frequent injuries, such as bone breaks and
muscle tears.
D) Regular, moderate-to-vigorous exercise predicts a longer life, which is contrary to the theory.

D