What does pronation involve?

Pronation refers specifically to the movement of a body part that changes its orientation such that it turns down or back. In the context of the foot, for example, pronation involves the inward roll of the foot during normal walking or running. The movement allows for shock absorption and helps redistribute the forces of activity.

Pronation can also occur in other body parts. For example, in the forearms, pronation means rotating the forearm so that the palm faces downward. This term encompasses a variety of movements in different contexts, always reflecting a turn or tilt toward a position that is considered downward or backward. Understanding this movement is crucial for analyzing human biomechanics, especially in physical activities and rehabilitation.

The other options describe different movements that don't align with the definition of pronation, making option B the correct choice.