Which of the following is a correct containment measure for interior abatement work?

Covering doors, vents, and windows is an essential containment measure during interior abatement work. This practice serves to prevent the dispersion of lead dust and particles into the surrounding environment, which could pose health risks to occupants as well as workers. By sealing off these entry points, it creates a controlled space where lead abatement measures can be performed safely, minimizing contamination and exposure.

Other options do not effectively contribute to containment during indoor abatement. For instance, laying plastic on the roof does not address interior containment needs. Using open containers can lead to the spread of hazardous materials and is contrary to safety protocols. Setting up signs outside may provide warnings, but it does not physically prevent lead from contaminating other areas inside the building. Therefore, the correct containment measure for such work is the careful sealing of openings like doors, vents, and windows.