Question

what is the first cranial nerve and its function?
optic, responsible for vision.
olfactory, responsible for the sense of smell.
vestibulocochlear, responsible for hearing and balance.
trigeminal, responsible for facial sensation and chewing.
glossopharyngeal, responsible for taste and swallowing.

Explanation:

The first cranial nerve is the olfactory nerve. It is responsible for the sense of smell. The optic nerve is the second cranial nerve for vision, the vestibulocochlear is the eighth for hearing and balance, the trigeminal is the fifth for facial sensation and chewing, and the glossopharyngeal is the ninth for taste and swallowing.

Answer:

B. Olfactory, responsible for the sense of smell.