In photosynthesis, how does the energy from sunlight ultimately lead to the production of ATP and NADPH during the light reactions?
A. Energy is directly transferred from sunlight to these molecules.
B. Sunlight splits water, releasing electrons that energize these molecules.
C. Light directly excites these molecules, increasing their energy level.
D. Sunlight triggers a series of electron transfers that ultimately create a proton gradient used to generate ATP and NADPH