Answer:
The correct option is A. A food web does not represent all the links in an actual ecosystem.
Step-by-step explanation:
A food web can be described as a combination of different food chains. Although a food web reflects the energy flow of an area, it doesn't illustrate the actual links in an ecosystem. For example, it is not possible to know how much energy is being transferred in a food web. The role of abiotic factors in an ecological problem can also not be determined by a food web. A food web will also not give the information of the number of organisms present.