Final answer:
While using a screwdriver, the biceps brachii, brachioradialis, and brachialis flex the lower arm and maintain grip, the supinator muscle allows for proper forearm rotation, and the triceps brachii provides stability to the movement. All these muscles work in synergy.
Step-by-step explanation:
Muscles Working in Synergy at the Elbow During Screwdriver Use
When using a screwdriver to tighten a screw, the muscles working in synergy at the elbow include both movers and stabilizers. As prime movers, the biceps brachii are involved in flexing the lower arm. Synergistic muscles, like the brachialis and brachioradialis, aid in this motion. These muscles provide the necessary flexion to maintain grip and apply torque. Meanwhile, the supinator muscle plays a critical role in allowing the forearm to rotate as needed when turning the screwdriver. Although not the main focus during this specific task, the triceps brachii act as antagonists to the biceps and can help stabilize the movement.
Therefore, the correct answer to the question is D. All of the above, as the biceps brachii, triceps brachii, and supinator muscles are all engaged during the act of using a screwdriver to tighten a screw.