Environmental

Radon gas in NC homes enters primarily through:

AThe roof and attic vents
BCracks and openings in foundations and floors from soil underneath✓ Correct
CWater pipes from municipal water systems
DOlder fiberglass insulation

Explanation

Radon is a naturally occurring radioactive gas produced by uranium decay in soil and rock. It enters homes primarily through cracks, joints, and openings in foundations and basement floors from the soil below.

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