A nurse is assessing a client's cranial nerves as part of a neurological examination. Which of the following actions should the nurse take to assess cranial nerve 11?

A. Cranial nerve 11, the accessory nerve, controls the sternocleidomastoid and trapezius muscles, which contribute to the movement of the neck and shoulders. However, while facial symmetry is related to other cranial nerves, this is the correct action for cranial nerve 11's motor function testing. B. Visual acuity is related to cranial nerve II (optic nerve), not cranial nerve XI. C. The gag reflex tests cranial nerves IX (glossopharyngeal) and X (vagus), not cranial nerve XI. D. Checking the pupillary response to light. The pupillary light reflex is controlled by cranial nerve II (optic) and cranial nerve III (oculomotor), not cranial nerve XI.