Question

how is light transmitted to the brain? auditory nerve sciatic nerve optic nerve iris nerve

Explanation:

To determine how light is transmitted to the brain, we analyze each option:

• Auditory nerve: Transmits sound - related signals, not light. Eliminate.
• Sciatic nerve: A major nerve in the leg, involved in lower - body motor and sensory functions, not light transmission. Eliminate.
• Optic nerve: The optic nerve is responsible for carrying visual (light - related) information from the eye to the brain. This matches the process of light transmission to the brain.
• Iris nerve: There is no such nerve. The iris is a structure in the eye that controls pupil size, and it doesn't have a nerve named "iris nerve" for transmitting light to the brain. Eliminate.

Answer:

C. Optic nerve