Final answer:
According to Massachusetts lead paint law, Sarah would need to delead her 1980s ranch home within 90 days after adopting a 5-year-old child.
Step-by-step explanation:
Under Massachusetts lead paint law, Sarah, as the owner of a 1980s ranch home, would need to follow certain requirements to ensure the safety of her adopted 5-year-old child.
The correct requirement is A. She has to delead within 90 days. This means that Sarah must hire a licensed lead inspector or risk assessor to determine if there is lead paint in the home. If lead paint is found, she must hire a licensed lead abatement contractor to remove or cover the lead hazards within 90 days.
It is important to note that lead paint was banned in the United States for use in housing in 1978. However, homes built before 1978 may still have lead-based paint present. Lead poisoning can have serious health effects, especially on young children, so it is crucial to take the necessary steps to mitigate the risks.