Which components can typically be grouped together during an interior lead inspection?

Grouping components during an interior lead inspection is vital for efficiency and thoroughness in identifying lead hazards. The correct answer represents items that commonly share proximity and surface types where lead-based paint might be present, particularly in homes built before 1978.

Balusters, walls, baseboards, and cabinet doors are all structural or architectural components of a home that are likely to be coated in lead-based paint if the home was built during a time when such paints were used. These surfaces are frequently painted and can deteriorate over time, leading to lead dust or chips that can pose health risks, especially to children.

In contrast, the other combinations include elements that do not typically share the same lead risk profile or are not as closely related. Furniture, carpets, and air ducts do not usually absorb lead in the same way, while floors, ceilings, and windows may not encapsulate lead risks cohesively. Fixtures, hardware, and electrical systems are generally not surfaces where lead paint is a concern, making option A the most relevant and correct choice for grouping in the context of lead inspections.