The second cranial nerve of frog is

Optic

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Vagus

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Auditory

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Trochlear

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Solution

The correct option is C Optic
There are 10 pairs of cranial nerves in a frog. They extend from lateral surfaces of the brain to the parts of the body. The second cranial nerve is an optic nerve. It originates from optic thalami and is somatic sensory in nature. It receives impulses from the retina of the eye and carries it to the brain.
So, the correct answer is option A.

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