Answer:
The correct answer is Bacteria.
Explanation:
Decomposers or saprotrophs are such organisms that depend on dead plants and animals for their food and nutrients. They help in decaying organic matter into various chemical nutrients essential for living organisms.
Bacteria is one great example of decomposers that changes dead organic matter into chemical nutrients like nitrogen and carbon that are released back into the air, soil, and water.
Thus, the correct answer is Bacteria.