Which of the following best describes a preventive measure that security guards can take?

Regular patrols of the premises serve as a fundamental preventive measure that security guards can implement to enhance safety and deterring potential criminal activity. By frequently moving around the area, guards create a visible security presence that can discourage suspicious behavior. The act of patrolling allows security personnel to monitor for any unusual activity, ensuring that they can intervene promptly if necessary. Additionally, regular patrols help guards become familiar with the environment, making them more effective in identifying and addressing potential security risks.

In contrast, the other options either focus on more reactive strategies, limit communication and engagement, or suggest isolation, which may not necessarily enhance security effectively. Confrontation can escalate situations instead of preventing them. Strict surveillance without communication limits the ability to respond effectively to incidents. Keeping the premises isolated can lead to a false sense of security and might hinder the ability to monitor the situation effectively.