Which statement correctly describes the diagram?

A) The process in which glucose is produced requires oxygen.
B) The process in which oxygen is used requires light energy.
C) The process in which carbon dioxide is used also forms glucose.
D) The process in which carbon dioxide is used releases light energy.\
C.) Carbon dioxide is a reactant in photosynthesis. Oxygen and glucose are products of photosynthesis. So the process in which carbon dioxide is used also forms glucose.