Question

the following combining form means ear. orchid/o oophor/o ophthalm/o ot/o

Explanation:

In medical - related word roots, "ot/o" refers to the ear. "Orchid/o" relates to the testis, "oophor/o" to the ovary, and "ophthalm/o" to the eye.

Answer:

D. ot/o