Which of the following is a key responsibility of a healthcare security officer?

Monitoring the premises is indeed a key responsibility of a healthcare security officer. This function involves being vigilant and aware of the surroundings to detect any suspicious activities, potential threats, or safety concerns within the healthcare facility. Security officers are tasked with ensuring the safety of patients, staff, and visitors, and monitoring the premises allows them to respond effectively to incidents, deter criminal activity, and maintain a secure environment.

The other options are not typically within the scope of a healthcare security officer's responsibilities. Conducting medical evaluations of patients is a function reserved for medical professionals such as doctors and nurses. Performing administrative tasks typically falls under the duties of administrative staff, and managing patient appointments and schedules is usually handled by receptionists or clerical staff. By focusing on monitoring the premises, security officers play a crucial role in upholding safety and security in healthcare settings.