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.
Xylem transports water and minerals from the roots to the leaves of the plant, where it is used in the production of food.
D would be the correct answer
I think it might be prism I’m not sure