Answer:
A
Step-by-step explanation:
basically, this shows how much energy is consumed the higher up in the food chain you go. Plants/producers would have 100% because that is the maximum amount we can get based on conditions. Not all plants get eaten/ are edible so primary consumers (think bugs, herbivores, etc.) do not get the absolute maximum amount of energy available. This happens again at the next level where not everything is eaten so energy is lost