The correct answer is C. Retina.
The retina is a light-sensitive tissue at the back of the eye that converts light into electrical signals that are sent to the brain. The brain interprets these signals as images.
The cornea is the clear front part of the eye that helps to focus light onto the retina. The choroid is the middle layer of the eye that provides blood to the retina. The iris is the colored part of the eye that controls the amount of light that enters the eye.
The retina is made up of millions of light-sensitive cells called photoreceptors. There are two types of photoreceptors: rods and cones. Rods are responsible for vision in dim light, while cones are responsible for color vision and vision in bright light.
When light hits the retina, it causes the photoreceptors to send electrical signals to the brain. The brain interprets these signals as images.
The retina is a very important part of the eye. If the retina is damaged, it can cause vision problems, such as blindness.