The three sets of color receptors within the retina are sensitive to wavelengths of visible light are: select one: a. red, green, and yellow b. orange, green and purple c. red, blue and yellow d. blue, green and red

D

Explanation:

These colors are also referred to as primary colors. When mixed in different proportions, they can produce a variety of secondary and tertiary colors and this is how the human eye is also to perceive many colors even with only these three eye pigments.  

rocks and weathering-matching

i believe the correct answer is d