Which of the following is a pro of building component replacement?

The advantage of building component replacement is that it permanently eliminates the source of lead exposure. When components that may contain lead-based paint, such as doors, windows, or siding, are replaced, the existing lead hazards are removed from the environment. This approach effectively addresses the underlying risk of lead exposure, as it targets the actual source rather than merely managing the symptoms or potential exposure points.

In contrast, while minimizing worker and resident exposure to leaded dust is important, it does not capture the full benefit of replacing components. Furthermore, the process of building component replacement inherently involves construction work, and while this might temporarily create some lead dust issues if not managed properly, the ultimate goal is to eradicate lead sources altogether, thus enhancing safety. Lastly, while replacing components may contribute to an increase in property value, this is not the primary motivation for lead hazard control and is more of a potential secondary benefit.