A scientist uses a prism to shine a rainbow at a filament of green photosynthetic algae. Bacteria in the environment of the algae cluster toward areas where the algae release the most oxygen. image
What conclusion can be drawn from the pattern of clustering bacteria?
A.
Red light is brightest.
B.
Algae most efficiently photosynthesize blue light.

C.
Algae most efficiently photosynthesize red light.
D.
Algae most efficiently photosynthesize green light.