Environmental

Urea-formaldehyde foam insulation (UFFI) is significant in real estate because:

AIt improves energy efficiency and adds value to the property
BIt can off-gas formaldehyde, a potential health hazard, and was banned for residential use in the 1980s✓ Correct
CIt is required in all buildings built after 1990
DIt is a form of asbestos insulation

Explanation

UFFI was widely used in the 1970s but was banned by the Consumer Product Safety Commission in 1982 for residential use due to concerns about formaldehyde off-gassing. Its presence must be disclosed in real estate transactions.

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