Which of the following best describes eversion?

Eversion refers to the movement of the foot where the sole turns outward, away from the midline of the body. This action primarily occurs at the subtalar joint and is essential for activities that involve balance and stabilization, particularly on uneven surfaces.

When considering other movements of the foot, turning the foot inward is known as inversion, which is the opposite of eversion. Bending the toes back describes dorsiflexion of the toes rather than a movement related to eversion. Spreading the toes apart refers to abduction, which is a different type of movement altogether. Thus, the best description of eversion among the options provided is indeed turning the foot outward.