Photons Are Critical to the Process of Photosynthesis Because Photons

Photons are critical to the process of photosynthesis because photons _____.

A) provide the water needed to conduct photosynthesis
B) are needed to excite the electrons of the pigment atoms in chlorophyll
C) provide the electricity needed to excite the chlorophyll in the leaves
D) cause leaves to appear green and attract sunlight
E) provide the chlorophyll needed to conduct photosynthesis