The correct answer is: B. Worms
Vermicomposting is a type of composting that uses worms to break down organic matter. The worms eat the organic matter and produce castings,
which are a nutrient-rich soil amendment.Fungi, bacteria, and birds are also involved in the decomposition of organic matter, but they do not play a role in vermicomposting.
Fungi are a type of decomposer that break down organic matter using enzymes. They are important in the decomposition of wood and other plant materials.
Bacteria are another type of decomposer that break down organic matter using enzymes. They are important in the decomposition of food waste and other organic materials.
Birds are not decomposers, but they can help to spread organic matter around the environment. They do this by eating seeds and other plant material and then excreting the undigested material.
In conclusion, worms are the only organisms that are responsible for vermicomposting.