Which term describes bodily movements that involve actions moving away from the midline of the body?

The term that describes bodily movements where actions move away from the midline of the body is abduction. Abduction specifically refers to the lateral movement of a body part away from the center line of the body. For example, when you raise your arms sideways, they are moving away from the midline in an abduction motion.

In contrast, adduction is the movement toward the midline, such as when you bring your arms back down to your sides after raising them. Aerobic fitness refers to the body's ability to take in and use oxygen during prolonged exercise and does not pertain to specific movements or directions. Agility relates to the ability to change direction quickly and effectively, which involves coordination and balance rather than specific movements in relation to the midline of the body. Therefore, abduction is the correct term for movements away from the body's midline.