Final answer:
The fovea and blind spot are both parts of the human eye, but with different functions. The fovea contains cone cells for sharp central vision, while the blind spot lacks any photoreceptor cells. Therefore, the answer is d) Ganglion cells.
Step-by-step explanation:
The fovea and blind spot are both parts of the human eye, but they have different functions. The fovea is a small area at the center of the retina that contains a high concentration of cone cells, which are responsible for sharp central vision and color perception. On the other hand, the blind spot is a small area on the retina where the optic nerve exits the eye, and it does not contain any photoreceptor cells. Therefore, the correct answer is d) Ganglion cells, as neither the fovea nor the blind spot contains these cells.