Final answer:
Mobility is the ability to move freely and is dependent on joint range of motion and flexibility. It is crucial for physical activities and overall fitness.
Step-by-step explanation:
The ability to move freely, often described as flexibility plus joint range of motion, can be referred to as mobility. Mobility at the joints allows for various body movements and activities, such as kicking a soccer ball, picking up a fork, and dancing. It is an important aspect of overall physical fitness and is dependent on the structure and classification of the joints.