Photosynthesis is a/an

Explanation-

The absorption of light energy and its conversion into chemical potential is known as photosynthesis.
Photosynthetic reactions include-

6CO2  + 12H2O→C6H12O6 +6O2+6H2O

In the above reaction, carbon is reduced to glucose in the presence of sunlight and chlorophyll whereas water is oxidized to oxygen.

Hence, photosynthesis is an oxidation-reduction reaction.



Final Answer-

So, The correct option is C.
Photosynthesis is an a/an- oxidation-reduction reaction.