Question

which of the following is one of the four most dangerous indoor air pollutants as identified by the environmental protection agency? radioactive radon gas cooking smells oxygen pet odors

Explanation:

The Environmental Protection Agency (EPA) identifies radioactive radon gas as one of the four most dangerous indoor air pollutants. Cooking smells and pet odors are not considered among the most dangerous indoor air pollutants, and oxygen is essential for life, not a pollutant.

Answer:

A. radioactive radon gas