Lead dust can be created through which of the following methods?

Lead dust can be created through breaking or sanding lead-painted surfaces due to the mechanical action involved in these processes. When lead-based paint is disturbed, such as during renovation, repair, or maintenance activities, tiny lead particles can be released into the air or settle on surfaces, becoming lead dust. This dust poses a significant health risk, especially to children, as it can be ingested or inhaled, leading to various health issues related to lead exposure.

The other options do not directly lead to the creation of lead dust. Using lead-based solder and cooking with lead cookware can expose individuals to lead through ingestion but not in the form of airborne lead dust. Storing lead safely involves controlling the environment to prevent lead exposure, rather than creating lead dust. Therefore, the method that specifically produces lead dust is the disturbance of lead-painted surfaces through breaking or sanding.