The reactions of photosynthesis consists of:

Explanation

Option A is correct.The reactions of photosynthesis consist of two phases, the light-dependent reactions and the Calvin cycle.Light-dependent reactions take place in the thylakoid membranes of chloroplasts. They use light energy to split water molecules into oxygen and hydrogen ions. The hydrogen ions are then used to produce ATP, a molecule that stores energy.Calvin cycle takes place in the stroma of chloroplasts. It uses ATP and NADPH, the energy molecules produced in the light-dependent reactions, to fix carbon dioxide into glucose