Which substance is a yellow-orange pigment that absorbs blue-green light a. chlorophyll b b. chlorophyll a c. carotenoid

Carotenoids absorb light in the blue-green and violet region and reflect the longer yellow, red, and orange wavelengths. Chlorophyll a and b: (a) Chlorophyll a, (b) chlorophyll b, and (c) β-carotene are hydrophobic organic pigments found in the thylakoid membrane.

Carotenoid          is the answer

its the cell wall and the they are unique to plant

it's c. (to reduce the greenhouse effect/carbon gasses)