Final answer:
Sagging and eversion of the lower eyelid is known as ectropion, which is correctly identified as option C.
Step-by-step explanation:
Sagging and eversion of the lower lid is known as ectropion. To clarify, here are the definitions of the terms provided:
- Entropion - This is when the eyelid, usually the lower eyelid, turns inward.
- Blepharitis - This is the inflammation of the eyelids.
- Ectropion - This is the condition where the lower eyelid sags and turns outward.
- Ptosis - This is drooping of the upper eyelid.
Therefore, the correct answer to the student's question is C. Ectropion.