Environmental
Radon is a health hazard in real estate because it is:
AA visible mold that grows in basements
BA colorless, odorless radioactive gas that can accumulate in buildings and cause lung cancer✓ Correct
CA chemical found in old plumbing pipes
DA byproduct of lead paint deterioration
Explanation
Radon is a naturally occurring radioactive gas produced by uranium decay in soil and rock. It can enter buildings through foundations and, if it accumulates to high levels, is the second leading cause of lung cancer in the U.S.
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