Colours of light mostly useful in photosynthesis are

The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.

it wants you to read whatever it gave you. then compare it to the others you read. you need to use textual evidence, and cite anything you do!

hope this !

~courtney

1.c

2.a

3.d