A. Herbivore
A.
B. Carnivore
B.
C. Producer
C.
D. Decomposer
D.
Correct Answer: C
সঠিক উত্তর: C
Explanation
ব্যাখ্যা
It must begin with an organism that can produce its own food, typically using energy from the sun through photosynthesis. These organisms are called producers, and they form the base of the food chain (first trophic level).