Question

which disinfection method for wastewater can be cancerous when fumes are inhaled? biotechnology chlorination ozonation uv light

Explanation:

Chlorination is a wastewater disinfection method where chlorine is used. When chlorine fumes are inhaled, they can be harmful and have carcinogenic potential. Biotechnology is not a disinfection method here, ozonation fumes are less carcinogenic in this context, and UV light has no fumes to inhale. So chlorination is the method with carcinogenic fumes when inhaled.

Answer:

B. Chlorination