Concept:The retina is the innermost layer of the eye that detects light.Explanation:The retina contains specialised light-sensitive cells called photoreceptors.These photoreceptors are of two types: rods and cones.Rods are sensitive to dim light, while cones detect colour and fine detail.When light strikes these cells, they generate nerve impulses that travel to the brain via the optic nerve.This allows us to see images clearly.Answer:C. Retina