Which of the following is NOT part of the typical duties of a security guard?

Making arrests for suspicious activity is not typically considered a part of a security guard's duties, which distinguishes this role from that of law enforcement officers. Security guards are primarily responsible for observing, reporting, and deterring potential threats, but they usually do not have the authority to arrest individuals. Their focus is on maintaining safety and security within a property, which includes monitoring security cameras, patrolling designated areas, and interacting with the public to ensure a safe environment. The authority to make arrests is reserved for police officers, who are trained to enforce laws and handle criminal activity when necessary. Therefore, option C accurately reflects a duty that falls outside the standard responsibilities of a security guard.