The correct answer to this open question is the following.
Although you forgot to include the options of the question, we can say the following.
Walking home after the lecture on the visual system, a student is thinking about what he has heard when he realizes that he has forgotten which type of cells carry visual information to the brain and which type of cells spread the signal within the retina. When he gets home and opens up his book, he will find out that ganglion cells send the signal to the brain, and horizontal and amacrine cells spread the signal across the retina.
Humans are able to see because of the formidable visual system. As part of the central nervous system in the human body, the main function of the visual system is to act as a "carrier" of information of visual images that we commonly see on a daily basis to process this information in the brain. It has a complex system that needs important organs such as the eye, optic tract, optic nerve, and optic chiasm, among others, to complete the process of sight.