Which of the following describes the nature of radon?

The correct choice accurately describes radon as a colorless, odorless gas. Radon is a naturally occurring radioactive gas that is produced from the decay of uranium in soil, rock, and water. It is significant in the field of real estate because it can accumulate in buildings, particularly in lower areas like basements. Homeowners are often encouraged to test for radon levels, as exposure to high concentrations of radon over time can pose health risks, including lung cancer.

Understanding radon's characteristics is essential for real estate professionals, as they may need to provide clients with information about potential radon hazards and encourage the implementation of mitigation measures when necessary. This highlights the importance of awareness regarding environmental factors that can impact property safety and health.