Concept:A food web is a network of interconnected food chains showing multiple feeding relationships.
Explanation:A food chain follows a single straight path: plant → herbivore → carnivore.
In nature, many food chains overlap because one animal eats different things.
This branching and interlinking of multiple food chains is called a food web.
It shows all possible energy paths in an ecosystem.
For example, a rabbit might eat grass and be eaten by a fox or a snake. That creates branches.
A food web is more complex than a single chain and represents real ecosystems better.
The term "food system" is not standard. "Food level" refers to trophic level (like producer, consumer). "Ecosystem" includes both living and non-living components.
Only "food web" correctly describes the branching series of food chains.
Answer:C. food web
