Which term would describe moving the shoulders forward?

The term that describes the movement of the shoulders forward is "protraction." In this context, protraction specifically refers to the anterior movement of the shoulder blades or scapulae away from the midline of the body. When the shoulders are moved forward, the scapulae are gliding apart, resulting in a protracted position.

Retraction refers to the movement of the shoulder blades toward the spine, which is the opposite of protraction. Flexion pertains to the bending of a joint, such as a decrease in the angle between two body parts, rather than the movement of the scapulae. Adduction describes the movement of a limb or body part toward the midline, which does not relate to the forward movement of the shoulders. Thus, protraction is the correct term to describe moving the shoulders forward.