When hearing is evaluated, which cranial nerve is being tested?

Rationale: A. Cranial nerve VII (facial nerve) is not primarily responsible for hearing; however, it does have some sensory function in the ear region. The primary cranial nerve responsible for hearing is cranial nerve VIII (vestibulocochlear), which is not listed among the options. B. Cranial nerve X (vagus nerve) is primarily involved in autonomic functions and does not directly relate to hearing. C. Cranial nerve I (olfactory nerve) is responsible for the sense of smell. D. Cranial nerve II (optic nerve) is responsible for vision.