Environmental

Carbon monoxide (CO) as an environmental hazard in North Dakota homes is primarily produced by:

ALead paint deterioration
BCombustion appliances like furnaces, water heaters, and attached garage vehicles✓ Correct
CAsbestos insulation
DGroundwater contamination

Explanation

Carbon monoxide is produced by incomplete combustion of fuels in furnaces, boilers, water heaters, fireplaces, and vehicles in attached garages. In North Dakota's cold climate, proper ventilation and CO detectors are critical.

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