There are how many pairs of cranial nerves in a human?

A

8

B

12

C

25

D

31

In the higher vertebrates and mammals, there are 12 pairs of cranial nerves. The human brain has 12 pairs of special nerves called as the cranial nerves. The twelve cranial nerves, in order from I to XII, are olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharyngeal nerve, vagus nerve, spinal accessory nerve, and hypoglossal nerve.

Thus, the correct answer is option B.