Which of the following constitutes a food chain?
Grass ,Goat and human
The correct option is B.
Explanation of correct option:
Explanation of incorrect options:
Option A:
Here, all the plants given are producers.
Option C:
The elephant is a herbivore, this won't eat a cow.
Option D:
The goat is a herbivore, this won't feed upon fish.
Final answer: Grass, Goats, and human constitutes a food chain.