The correct answer is d) food web.
A food web is a complex network of feeding relationships between various organisms in an ecosystem. Unlike a food chain, which shows a linear path of energy flow from one organism to another, a food web illustrates how different food chains are interconnected, displaying the multiple ways in which energy and nutrients circulate through the ecosystem.
In a food web, you can see that various species can occupy different trophic levels and that they can consume multiple types of organisms, making it a more realistic representation of the ecosystem. This complexity is essential for understanding biodiversity and ecosystem health, as it highlights the interdependence of species and how changes to one part of the web can affect others.