Question

what is a function of the cornea of the eye?
it sends electrical signals to the optic nerve.
it contains rods and cones to detect color.
it relays information from the optic nerve to the brain.
it serves as a protective structure.

Explanation:

The sclera (the white part of the eye) and the cornea form the tough outer - layer of the eye. The cornea is the clear front part of the eye and its main function is to act as a protective structure and also to refract (bend) light as it enters the eye. The retina contains rods and cones for detecting light and color, and the optic nerve transmits electrical signals from the retina to the brain. The cornea does not relay information from the optic nerve to the brain or send electrical signals to the optic nerve.

Answer:

It serves as a protective structure.