The right answer is B.carbon fixation.
Rubisco, by its full name ribulose-1,5-bisphosphate carboxylase / oxygenase, is the key enzyme for the fixation of carbon dioxide CO2 in plant biomass by initiating the Calvin cycle, in relation to the solar energy captured. by the chlorophyll at the origin of the processes of photosynthesis. It catalyzes both carboxylation and oxidation of ribulose-1,5-bisphosphate.
