Answer:
B). 9,300 kilocalories
Step-by-step explanation:
In an ecosystem, the energy and nutrients are passed on all over the food chain. In an aquatic food chain, the amount of energy that would be present for the primary consumers would be 9,300 km as they retain the maximum amount of energy produced from the sun through photosynthesis and it would reduce significantly when passed on to secondary and tertiary consumers. Thus, option B is the correct answer.