The human retina has about 127 million cells, but only one million nerves going

Question

The human retina has about 127 million cells, but only one million nerves going from those cells back to the brain. Groups of about 100 retinal cells are the basic unit of visual activity. Pick the best answer and also include some reasoning:

a) the 100 or so cells of each cell group MUST be adjacent to each other to form images

b) the 100 or so cells do not necessarily have to be adjacent to form images, images will form either way

c) the 100 or so cells must be distributed over the whole retina, meaning not adjacent, to form images

Explanation / Answer

From the given data 127 (about 100 or so cells) million retina cells are distributed over one million nerves so the number of retina cells per basic unit of visual activity.

            To form the clear image all the basic unit of visual activity should be required. The cells no need to adjacent. Thus, the option (c) is correct answer.

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