Environmental

Radon is a concern in Minnesota because:

AMinnesota's lakes release radon into the air
BMinnesota's soil and geology cause higher radon levels than many states, and it is the leading cause of lung cancer in non-smokers✓ Correct
CMinnesota building codes require radon testing for commercial properties only
DRadon affects only coastal states

Explanation

Minnesota has elevated radon levels due to its glacial soil and underlying geology. Radon is a naturally occurring radioactive gas that enters homes through foundation cracks and is the leading cause of lung cancer in non-smokers. Minnesota recommends testing all homes for radon.

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