What type of work practice is prohibited when dealing with lead-based paint?

The prohibition of open flame burning or torching when dealing with lead-based paint is rooted in the significant health risks associated with lead exposure. Open flame methods can generate lead fumes or dust that can be inhaled or settle in the environment, leading to contamination and increased risk of lead poisoning, particularly in children and pregnant women.

This safety measure is crucial due to lead's toxic nature and its potential to cause severe health issues, including neurological damage and other long-term health effects. Hence, avoiding such high-risk practices is essential in any renovation or demolition activities in environments where lead-based paint may be present.

In contrast, the other choices typically include practices that may still be acceptable with proper safety measures. For example, while using paint sprayers can be controversial, they can be used safely with appropriate precautions about containment and protection. High-efficiency filters are also utilized in various applications to control lead dust, and wearing gloves is a basic protective measure that should always be employed. Therefore, open flame burning or torching stands out as a distinctly hazardous practice that must be avoided entirely.