Question

the anterior portion of the sclera is the: a pupil. b iris. c cornea. d lens.

Explanation:

The sclera is the white outer layer of the eyeball. The anterior (front) part of the sclera is modified to form the cornea, which is transparent and allows light to enter the eye. The pupil is the opening in the iris (the colored part of the eye) that regulates light entry. The lens is behind the iris and helps focus light on the retina.

Answer:

C. cornea