The correct statement regarding the role of photosynthesis in the flow of energy is:
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
Photosynthesis allows plants, algae, and some bacteria to convert sunlight (radiant energy) into chemical energy stored in the form of glucose. This process forms the basis of the food chain, where primary producers (like plants) serve as a source of energy for primary consumers (herbivores) and, subsequently, for higher trophic levels (carnivores and omnivores).