Why is it that a very dim star disappears when you look directly at it, but you can see it by looking slightly away from it?
a. Rods are concentrated in the fovea, and cones are concentrated in peripheral vision.
b. You have a blind spot in the very center of your vision.
c. There is a higher concentration of receptors in the fovea, which is just outside the center of your vision.
d. Cones are concentrated in the fovea, and rods are concentrated in peripheral vision.
Answer: D. Cones are concentrated in the fovea, and rods are concentrated in peripheral vision