Question

question 9
which combining form means old age?
○ kerat/o
○ scler/o
○ presby/o
○ blephar/o

Explanation:

The combining - form "presby/o" means old age. "Kerat/o" refers to the cornea, "scler/o" refers to the sclera (white of the eye), and "blephar/o" refers to the eyelid.

Answer:

C. presby/o