Question

cholera, giardiasis, and typhoid fever are all diseases associated with what class of water pollution?
radioactive
infectious agents
explosive
super - oxygenated

Explanation:

Cholera is caused by the bacterium Vibrio cholerae, Giardiasis is caused by the protozoan Giardia lamblia, and Typhoid fever is caused by the bacterium Salmonella typhi. All these are infectious agents. Infectious agents in water can cause diseases when ingested. Radioactive pollution involves radioactive substances, explosive is not a relevant class for these diseases, and super - oxygenated is not a typical class of water pollution related to these specific diseases.

Answer:

B. Infectious agents