The test for which nerve includes having the patient move their tongue?

The correct choice is the hypoglossal nerve because this cranial nerve is primarily responsible for controlling the movements of the tongue. When a patient is asked to move their tongue—such as sticking it out, moving it from side to side, or making specific shapes—this action tests the motor function of the hypoglossal nerve.

The hypoglossal nerve innervates the intrinsic and extrinsic muscles of the tongue, allowing for tasks such as speaking, swallowing, and manipulating food. Assessment of the tongue's movement can reveal any dysfunction or impairment related to this nerve. This test is particularly important in diagnosing conditions that may affect the nervous system or muscle control in that area.

In contrast, the other nerves listed have different primary functions. The facial nerve is primarily involved with facial expression, taste sensations from the anterior two-thirds of the tongue, and some aspects of salivation. The glossopharyngeal nerve is involved in taste from the posterior one-third of the tongue and innervating muscles in the throat for swallowing. Lastly, the vagus nerve has a broad range of functions, including regulating heart rate, gastrointestinal peristalsis, and conveying sensory information from the ear and throat. Thus, the action of moving the