What type of synovial joint movement is the movement of a body part around its own axis?

The correct answer is C. Rotation.

Explanation: Rotation is the movement of a body part around its own axis. This type of movement allows for twisting or turning motions, such as turning your head from side to side or rotating your arm. Flexion and extension involve bending and straightening, while supination and pronation refer to specific movements of the forearm and palm.