Briana is studying a model of the light-dependent reactions of photosynthesis. the diagram shows a part of this model. a ray of light strikes photosystem ii. a chemical equation shows that 2 water molecules (h2o) break apart to release 4 hydrogen ions, an oxygen molecule, and 4 electrons. briana notices the electrons that the water molecules release. she asks, "will the electrons build up in the chloroplast? " which addition to the diagram would be most useful for answering briana's question? a. a wavy arrow that shows photosystem i b. an equation for the chemical reaction that forms water from hydrogen ions, electrons, and oxygen molecules c. an arrow that shows the electrons moving through electron carriers, and received by nadp+ d. an equation for the chemical reaction that forms hydrogen gas from hydrogen ions and electrons