A security officer may only conduct an investigation related to what?

The correct answer is that a security officer may only conduct an investigation related to a firearm found on the property. This choice reflects the specific legal authority and responsibility given to security officers regarding firearms, as such items can pose significant safety risks and may involve legal implications that necessitate immediate and proper reporting.

When a firearm is discovered, it typically requires a specialized approach, including notifying law enforcement and documenting the situation. The presence of a firearm on property can endanger those nearby and can escalate situations rapidly, so it is vital for the security officer to handle it with the appropriate protocol and authority.

In contrast, while the officer may be able to observe minor incidents, personal belongings, or suspicious individuals, investigating these matters does not typically fall within the same level of urgency or legal responsibility that is crucial when it comes to firearms. In these other scenarios, security officers generally monitor, report, and escalate issues to the appropriate personnel or law enforcement rather than conducting in-depth investigations themselves.