Environmental

The presence of polychlorinated biphenyls (PCBs) in a building is associated with:

ALead paint in older residential properties
BOld electrical transformers and fluorescent light ballasts manufactured before 1979✓ Correct
CAsbestos in ceiling tiles
DUnderground oil storage tanks

Explanation

PCBs (polychlorinated biphenyls) are toxic industrial compounds used in electrical transformers and fluorescent light ballasts before 1979. Their manufacture was banned by the EPA.

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