The primary function of Cranial Nerve V is associated with which of the following?

Cranial Nerve V, also known as the trigeminal nerve, plays a crucial role in the sensory innervation of the face. Its primary function is to provide touch and sensation in the facial region, which includes areas such as the forehead, cheeks, and jaw. This nerve has three major branches: the ophthalmic, maxillary, and mandibular, each responsible for sensory input from different parts of the face.

When considering the other options, they refer to functions associated with different cranial nerves; for example, the sense of smell is linked to Cranial Nerve I (olfactory), eye movement pertains to Cranial Nerve III (oculomotor), and balance is regulated by Cranial Nerve VIII (vestibulocochlear). Therefore, the primary function of Cranial Nerve V is unequivocally associated with touch and sensation in the face.