Question

The tough, opaque tissue that acts as the eye's protective outer layer is called the

A lens
B. cornea
C. fovea
D. sclera​

Answer 1

D. sclera

Step-by-step explanation:

all other options are transparent. the sclera is the white of the eye, while the lens, cornea, and fovea are all portions that you see through. the fovea is the area of the lens of highest visual accuity. The cornea acts as a protective outer layer, but it is not opaque.