Which of the following is an example of a situation that security officers should report to law enforcement?

A robbery occurring on the premises is a significant incident that directly impacts the safety and security of individuals and property. It involves the illegal taking of property through threat or force, and it can pose an immediate danger to others present. In such cases, prompt reporting to law enforcement is essential to ensure a swift response, facilitate an investigation, and potentially apprehend suspects. This not only helps in addressing the immediate threat but also aids in preventing future incidents. The involvement of law enforcement is critical in managing and resolving such serious criminal activity effectively.

On the other hand, minor arguments among employees, common parking lot disputes, and overdue library books do not typically encompass criminal activity that requires law enforcement intervention. These situations are generally manageable at the organizational or administrative level, without necessitating law enforcement's involvement.