Which of the following is an example of an active range of motion?

Active range of motion refers to the movement that an individual can perform independently, using their own muscle strength to engage and control the movement through a full range of motion.

In this case, the action of a client moving their shoulder through flexion and extension perfectly captures the essence of active range of motion. The client is actively engaging their shoulder muscles to achieve the upward and downward movements, showcasing their ability to control the range of motion without assistance. This type of movement not only helps improve flexibility and muscle coordination but also strengthens the muscles involved as they work to execute the motions.

The other options illustrate different forms of stretching or movement that do not incorporate the individual's active engagement of their muscles to the same extent. For example, having a trained professional stretch a client's muscles or a client passively holding a stretch does not involve the client using their own muscle strength. Stretching with a resistance band also involves an external tool assisting in the movement rather than purely the client's muscular effort. Therefore, option C exemplifies active range of motion as it focuses on the client's own effort to move through the range of motion independently.