Factor which is not normally limiting in photosynthesis is

Among the given options, the factor which is not normally limiting in photosynthesis is Chlorophyll.
Chlorophyll is any of several related green pigments found in cyanobacteria and the chloroplasts of algae and plants.
Chlorophyll allows plants to absorb energy from light. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion.