Final answer:
The hypoglossal nerve (XII) is a motor nerve responsible for controlling tongue movements.
Step-by-step explanation:
The hypoglossal nerve (XII) is classified according to its function as a motor nerve. It is responsible for controlling the movements of the tongue muscles. Its primary role is to enable tongue movements necessary for speech and swallowing. The hypoglossal nerve does not carry any sensory fibers or autonomic fibers, so it is purely a motor nerve. By orchestrating the intricate and precise movements crucial for articulation and swallowing, the hypoglossal nerve plays a pivotal role in facilitating speech and the digestive process, exemplifying its specialized motor function without involvement in sensory perception or autonomic responses.