Question

what is the second cranial nerve and its function?
facial, responsible for facial expressions and taste.
vestibulocochlear, responsible for hearing and balance.
optic, responsible for vision.
trochlear, responsible for eye movement.
olfactory, responsible for smell.

Explanation:

The 12 cranial - nerves are numbered in order of their attachment to the brain. The second cranial nerve is the optic nerve, which transmits visual information from the retina to the brain, enabling vision.

Answer:

Optic, responsible for vision.