Improving overall fitness may not be possible for people who have physical limitations.
a. true
b. false

So, we know that fitness means being fit or healthy correct. If I jog daily, using my legs then that's a form of physical fitness, but what if I lost my legs. I can't jog anymore, but I can still eat properly to stay in shape, train my upper body, etc. Hence, I would say the answer is False.

The answer would be age 18.

Dang it i was gonna answer but yeah its c