Answer:
a. The color of the pigment is due reflecting light they cannot absorb.
Explanation:
Chlorophyll looks green because its porphyrin ring (which has a magnesium atom in the middle) absorbs all wavelengths of visible light, except the green color wavelength.
Chlorophyll is an extremely important biomolecule, critical in photosynthesis, a process that allows plants and algae to produce energy from sunlight.
