Answer:
The correct option is B which is plants.
Explanation:
Food chain contains:
- Producers: Organisms that produce food for their own and other animals. They convert simpler compounds into complex compounds.
- Consumers: They utilize the food made by the consumers. There primary, secondary and tertiary consumers.
- Decomposers: They convert complex organic compounds into simpler one.
So plants are autotrophic and they are the producers in food chain.
Hence Earth's food chain starts with plants.
