Question

the size of a food web is limited by the number of
a detritivores.

b primary consumers.

c primary producers.

d top level predators.

Explanation:

The size of a food web depends on energy flow. Primary producers (e.g., plants) capture sunlight to make energy, which supports all other trophic levels. Limited primary producers mean less energy available, restricting the number of consumers and overall web size. Detritivores, primary consumers, and top predators depend on producers, so they don’t limit the web’s size.

Answer:

C. primary producers.