Answer:
B. It is carrie6 by a pollinator
Solar energy provides the reducing power within green leaves to convert CO2 and H2O into sugars. ... During illumination, leaf cells have both a source (respiration) and sink (photosynthesis) for CO2. Respiration in some species appears to be greatly stimulated by light.
The answer from my knowledge would be B.
They are all formed from data, predictions and observations.