Question

this single - celled organism may cause disease, but it is also essential to important life processes like decomposition. a. bacteria b. fungi c. protozoa d. viruses please select the best answer from the choices provided.

Explanation:

Bacteria are single - celled organisms. Some bacteria can cause diseases (pathogenic bacteria), and many bacteria play a crucial role in decomposition by breaking down organic matter. Fungi can be single - celled or multicellular, but the description specifically points to a more common single - celled decomposer and disease - causing agent which is bacteria. Protozoa are single - celled but are not as well - known for decomposition as bacteria. Viruses are not cells.

Answer:

A. bacteria