4. Which is not a physical change associated with aging? muscle mass increases
hair turns gray
hearing becomes less sharp
wrinkles appear on the face

muscle mass increases

Explanation:

Aging people's muscle mass decreases.

if this is true of false i think it would be true

lifetime activities are certain actions that are either required throughout your life or you choose to do them. for example, eating is considered a lifetime activity, drinking water or other beverages, keeping your body clean, taking medicine. those types of actions are considered lifetime activities.