What describes movements involving rotation, such as twist motions from joints?

The correct answer, which is supination and pronation, pertains specifically to rotational movements about the body's long axis, particularly in relation to the forearms and feet.

Supination refers to the outward rotation of the forearm, causing the palm to face upward or forward, while pronation is the inward rotation of the forearm, resulting in the palm facing downward or backward. This terminology is essential in both anatomy and physiology as it describes how movements of the body can effectively alter the positions of the limbs in relation to one another.

Additionally, while other options involve movements of various types, they do not specify rotation. Flexion and extension refer to bending and straightening movements, often in a sagittal plane. Dorsiflexion and plantarflexion are specific to the movements of the foot concerning the ankle, while adduction and abduction describe movements toward or away from the midline of the body respectively. None of these options encompass the twisting motions that the terms supination and pronation accurately describe.