Sagot :
Answer:
Consumers.
Explanation:
Food chain may be defined as the sequential tropic food levels in the ecosystem. The organism eats other organism and itself being eaten by the other organism.
Producers are the organism that prepare their own food in the food chain. The frog eats insect. Here, the frogs acts as the consumer as it depends on the other organism for its food and eats directly plants and butterflies.
Thus, the answer is option (A).