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:

A food web’s size depends on energy flow, starting with primary producers (autotrophs like plants) that capture sunlight/chemical energy. They form the base—without enough producers, there’s insufficient energy to support higher trophic levels (consumers, predators). Detritivores recycle matter but don’t limit size; primary consumers and top predators depend on the producer base.

Answer:

C. primary producers.