Answer: They distinguish black, white, and gray.
Step-by-step explanation:
In the human eye (specifically in the retina) there are two types of photoreceptors that convert light into electrical messages that are sent to the optic nerve, and then the image information is forwarded to the brain. These photoreceptors are the cones and the rods.
It should be noted that the rods are more numerous and sensitive than the cones, but they are not sensitive to color. This type of cells is responsible for peripheral vision and in a low light condition.
On the other hand, there are three types of cones:
-Those sensitive to red light
-Those sensitive blue light
-Those sensitive green light
Then, according to the explanation given and the options shown, the only one that is not true is:
They distinguish black, white, and gray.