The diagram shows how light energy from the sun drives the processes of photosynthesis and cellular respiration. which statement best describes the relationship between photosynthesis and cellular respiration?

a.) the only difference between photosynthesis and cellular respiration is whether the process occurs in plants or animals
b.) photosynthesis and cellular respiration are competitive processes that require the same reactants to start a reaction
c.) photosynthesis and cellular respiration are complementary processes that could not occur without one another
d.) the only difference between photosynthesis and cellular respiration is whether or not light is available to start the reaction