Answer:
D
Step-by-step explanation:
Through the process of photosynthesis, CO₂ and H₂O are converted into glucose and O₂. Through a series of reactions, there are high energy bonds within glucose, that when broken down can release a lot of energy.
When glucose is broken down, ADP is converted into ATP, which can be used to supply other reactions with energy.
Also, another indirect product of photosynthesis is the production of NADPH from NADP⁺. That energy contained in that bond to hydrogen can be used in other reactions in the Calvin cycle.