Which of the following is a key responsibility of a security guard?

Monitoring premises to prevent unauthorized access is a key responsibility of a security guard. This duty is essential for maintaining safety and security in various environments, whether it be a corporate facility, public venue, or private property. By vigilantly observing and controlling access to a location, a security guard helps deter criminal activity, such as theft or vandalism, and ensures that only authorized individuals enter the premises. This proactive approach plays a critical role in protecting both people and property, allowing for a secure environment.

While other roles, such as providing legal advice, managing financial transactions, or conducting health inspections, may be important in their own contexts, they fall outside the typical scope of responsibilities for a security guard. These tasks require specialized knowledge and skills that are not part of a security guard's training or duties.