Environmental

Carbon monoxide (CO) is a hazard in Texas homes primarily produced by:

AAsbestos ceiling tiles
BImproperly vented fuel-burning appliances, attached garages, and blocked flues✓ Correct
CLead paint oxidation
DRadon decay products

Explanation

Carbon monoxide is produced by combustion appliances (gas furnaces, water heaters, fireplaces, generators). Improper venting, blocked flues, and attached garages where cars are run are primary sources. CO is odorless and colorless and can be fatal.

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