Environmental

Radon is a concern in real estate because it is:

AA toxic liquid that can contaminate well water
BA colorless, odorless radioactive gas that can accumulate in buildings and cause lung cancer✓ Correct
CA chemical found in building materials that causes skin irritation
DA byproduct of oil and gas production that contaminates soil

Explanation

Radon is a naturally occurring colorless, odorless radioactive gas produced by the decay of uranium in soil and rock. It can seep into buildings and accumulate to dangerous levels. Long-term exposure is a leading cause of lung cancer.

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