Biology · Support and Movement

The correct answer is Abductor. Abductor muscles are responsible for moving limbs away from the midline of the body, such as when you raise your arms or legs to the side. In contrast, Adductor muscles do the opposite by pulling limbs toward the body’s midline. Protractor is not a relevant term in this context, as it is not used to describe muscle functions. Extensor muscles are involved in straightening limbs or increasing the angle between body parts, not moving them outward.

Adductor muscles are responsible for moving a limb toward the midline of the body, not away from it.

Protractor is not a term used to describe muscles that move limbs; it is more commonly associated with drawing instruments.

Abductor muscles move a limb away from the midline of the body, which is the correct action described in the question.

Extensor muscles function to straighten a limb or increase the angle between body parts, not to move them outward from the body.