What type of maintenance is required for the walls in a funeral preparation room?

The requirement for walls in a funeral preparation room is that they must be light-colored, easily cleaned, and in good repair. This is primarily for hygiene and sanitation purposes, as these rooms are involved in the handling of human remains and should be kept as sterile as possible. Light colors aid in identifying dirt and contaminants, making it easier to maintain a clean environment.

Additionally, walls should be constructed from materials that can be easily cleaned and disinfected to prevent the buildup of bacteria and other pathogens. Good repair is essential to avoid any potential health hazards that could arise from damaged walls, such as flaking paint or peeling surfaces which can harbor microorganisms.

The other choices do not meet these sanitary requirements. Dark colors may conceal dirt but do not align with hygiene standards. Unfinished wood and cardboard are not suitable materials for a preparation room due to their porous nature, which makes them difficult to clean and more susceptible to contamination.