Answer :
The branches of the facial nerve (VII) supply the muscles of facial expression. Other cranial nerves like the trigeminal, vagus, and optic nerves serve different functions related to sensation, muscle control of the jaw, and vision, respectively. Therefore, the correct answer is option c) facial.
The facial nerve is responsible not only for the muscles involved in facial expressions but also for part of the sense of taste and the production of saliva. The other cranial nerves such as the trigeminal nerve (V) is responsible for cutaneous sensations of the face and controlling the muscles of mastication, rather than muscles of facial expression. On the other hand, the vagus nerve and optic nerve are associated with different functions, such as homeostatic control of the organs of the thoracic and upper abdominal cavities and vision, respectively.
