Final answer:
The blind spot does not have any cones and therefore produces no visual image.
Step-by-step explanation:
The correct answer is D) cones. The blind spot, also known as the optic disc, is the point in the retina where the optic nerve exits the eye. This area lacks photoreceptors, which include rods and cones. Since cones are responsible for color vision and operate in intense light, the blind spot does not produce a visual image.