Answer: Plants
Explanation: The plants lie at the basic stage of the food chain. They are autotrophic in nature which means that they will make their own food by the help of the process known as photosynthesis.
The plants make food by the help of sunlight, carbon dioxide and nutrients present in the soil. Soil also contains water that helps in the process of the photosynthesis.
The plants are known as producers that begins any food chain.
