Environmental
Mold in a residential property primarily develops because of:
AElevated radon levels
BMoisture or water intrusion combined with organic materials✓ Correct
COld-growth timber in the framing
DProximity to industrial facilities
Explanation
Mold requires moisture (water intrusion, leaks, high humidity), organic material (wood, drywall), and air to grow. Addressing moisture sources is the primary remediation strategy.
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