The correct option is B 6CO2+6H2O→C6H12O6+6O2
Photosynthesis is the process by which green plants utilize the energy from sunlight to convert carbon dioxide and water into glucose.
Photosyntheis can be divinded into two stages: a light dependent stage and a light independent stage.
During the light dependent stage, photolysis of water takes place and oxygen and energy in the form of NADPH and ATP are generated.
During the light independent stage, carbon dioxide is converted to glucose via the calvin cycle by utilizing the energy generated during the light dependent stage.
In the Calvin cycle, six molecules of CO2 are required generate one molecule of glucose.
Therefore the overall reaction of photosynthesis is:
6CO2+6H2Olight−−−−−−→chlorophyllC6H12O6+6O2