Answer:
The correct answer is option B) "plants or producers".
Explanation:
The food chain is traditionally considered the way organisms eat each other starting from the plants or producers that produce their food from sunlight by photosynthesis. However, food chain is also the transmission of energy among the organisms, which gets lost in each step mainly because of respiration. Being the first organism in the food chain, the plants or producers are the ones with most energy available for them.
