Which situation justifies a guard's request for a personal search?

A guard's request for a personal search is justified primarily by the need to ensure safety from weapons. This is critical in maintaining a secure environment, especially in places where weapons can pose a significant threat to public safety or property. By conducting a personal search, the guard can assess whether an individual poses a risk due to the presence of any weapons.

This action aligns with the responsibilities of security personnel, who are tasked with not only preventing theft and protecting property but also ensuring that the environment is safe for everyone present. This includes the prevention of potentially dangerous situations that could arise from individuals carrying weapons onto premises.

While checking for lost items and preventing theft are important aspects of a guard's duties, they do not inherently justify a personal search. The focus on safety from weapons represents a higher concern that security personnel must prioritize to effectively carry out their role.