Refer to this summary equation of photosynthesis to complete the sentences about chemical bonds and reactions. 6 co2 + 6 h2o → c6h12o6 + 6 o2

The photosynthesis is a process in which the plant produces glucose () from carbon dioxide and water. The reaction process passed through a number of steps in the plant in presence of chlorophyll. The reaction cannot happen in laboratory. Here the oxygen atom is reduced from (-2) state in water to (0) in oxygen molecule. On the other hand the carbon atom of carbon di oxide is oxidized from (+4) to zero (0) in glucose.  

the answer would be c