The most accurate response 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.
This statement captures the essential function of photosynthesis, which is the process by which plants, algae, and some bacteria convert sunlight (radiant energy) into chemical energy stored in glucose and other organic molecules. This chemical energy then serves as the foundation for energy flow in the food chain, as it supports the metabolic processes of various organisms, including herbivores and carnivores.