Why is it important that melanin is present in its highest concentration in the keratinocytes at or near the basale layer of cells?

It is important that melanin is present in its highest concentration in the keratinocytes at or near the basal layer of the cell because, it is the one that is responsible for producing skin coloring pigment known as melanin, which give the skin its color and also it helps protect the deeper layers of the skin from harmful effects of the sun.

The answer is 0.01 meter