The correct answer is C.
Age affects functional fitness. As one grows older, it becomes more difficult to maintains high level of fitness for various reasons. For instance, as one ages, the density and sizes of the bones in one's body shrink and they become more prone to fractures. Also, the energy level that one has reduces as one advances in age. Thus, as one grows older, it becomes necessary to participate less in physical activities.
Explanation:
I believe it's TRUE.
(I ain't a parent but I believe it sure is true)
have a good day^^