Environmental

In New York, 'indoor air quality' concerns in buildings can include all of the following EXCEPT:

AVOCs from off-gassing materials
BCarbon monoxide from combustion appliances
CRadon from soil
DBeneficial ozone generated by air purifiers (at safe levels)✓ Correct

Explanation

Common indoor air quality concerns include VOCs, carbon monoxide, radon, mold, and asbestos fibers. While high ozone levels from air purifiers can be a hazard, ozone at safe levels is not a concern—unlike the other pollutants listed.

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