Trichromatic theory suggests that
a) the retina has one type of color receptor that responds differently to each color.
b) the retina has two types of color receptors that respond in a different manner for each color.
c) the retina has three types of color receptors—red, green, and blue-violet.
d) color results from opposing processes involving three sets of color receptors, red-green, blue-yellow, and black-white.
e) color vision is a function of brain activity.
c) the retina has three types of color receptors—red, green, and blue-violet.
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