Environmental
Asbestos in a building is considered most dangerous when:
AIt is tightly bound (non-friable) in floor tiles
BIt is friable (crumbling) and can release fibers into the air✓ Correct
CIt is located in exterior siding only
DIt is intact and undisturbed in good condition
Explanation
Asbestos is most hazardous when it is friable — meaning it can be crumbled by hand pressure and release microscopic fibers into the air. Inhalation of asbestos fibers is linked to mesothelioma, lung cancer, and asbestosis. Non-friable asbestos in good condition is generally left in place.
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