Considering the wavelengths of light shown below, the pigments in the granum absorb mainly in which range?
a. green, which is why plants are green
b. the infrared
c. the entire spectrum of white light
d. blue-violet and red-orange

D. blue-violet and red-orange

Explanation:

The light reactions of photosynthesis use only  certain wavelengths of visible light.

Light absorbing molecules known as pigments in  the membranes of a granum absorb mainly  in blue-violet and red-orange wavelengths. We do not see these absorbed wavelengths. What we see when we look at a leaf are the  green wavelengths that the pigments transmit and reflect.