Answer:
D- PS I absorbs the longer wavelength of light while PS II absorbs a shorter wavelength of light.
Step-by-step explanation:
PS I absorbs the longer wavelength of light while PS II absorbs a shorter wavelength of light. Photosystem I absorbs 700 nm while photosystem II absorbs 680 nm. They both occur in the thylakoid membranes. Both systems are light-dependent reactions.