What reactants are involved in photosynthesis?
A. H₂0 and CO₂ and sunlight energy
B. C₂H4O2 and H₂0 and chemical energy
C. H₂O and CO₂ and chemical energy
D. C₂H4O2 and H₂0 and sunlight energy
The three reactants used in photosynthesis are water (H2O) carbon dioxide (CO2), and light (sunlight energy). These reactants are used to produce glucose/food for plants and oxygen that is later released.