Which action describes adduction?

Adduction refers to the movement of a limb or body part toward the midline of the body. This action is crucial in various body movements and functional activities. For example, when you bring your arms down to your sides after raising them or when you squeeze your legs together, you are performing adduction.

This definition highlights the importance of understanding directional movements in anatomy and kinesiology, as they are foundational in analyzing how the body functions during different activities. In contrast, the other options describe different types of movement; moving away from the midline corresponds to abduction, horizontal plane movements typically refer to actions like rotation or lateral movements, and rotation describes a pivoting motion around an axis rather than a lateral shift toward or away from the body's center.