Which statement best describes the role of photosystems in the light reactions?

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Photosystems act as light-collecting centers that start the energy conversion in the light reactions by exciting the reaction center and driving electron transport. Antenna pigments gather photons and funnel that energy to chlorophyll in the reaction center. When the reaction center is excited, it passes an energized electron to a primary electron acceptor, kickstarting the electron transport chain. As electrons move through the chain, protons are pumped across the thylakoid membrane, creating a proton gradient that powers ATP synthesis, and electrons are ultimately transferred to NADP+ to form NADPH. Water is split at the photosystem to replace the electrons, releasing oxygen. In short, photosystems convert light energy into chemical energy by initiating electron flow that leads to ATP and NADPH, which fuel later carbon fixation. The other ideas aren’t describing this flow: ATP is produced from the proton gradient rather than being stored directly by the photosystems, carbon fixation happens in the Calvin cycle not during the light reactions, and gravitational energy isn’t generated in this process.