Question

A. the base of a food web?

Answer 1

Primary producer

Step-by-step explanation:

(I am guessing you are talking about the energy pyramid)

The primary producer is the organism that gives energy to the primary consumers.

Answer 2

A base of a food web contains all the producers (plants)

Step-by-step explanation:

The producers give energy to the consumers and so forth. As the energy travels through the food web the energy decreases.