Nevada Private Patrolman PPO License Practice Exam

The methods used to observe suspicious behavior and changes in the physical environment in security contexts include both personal and remote ways. One of the options, being physically present or "in person", involves being directly on-site, observing the situation and monitoring any changes. This method allows for immediate response and a detailed assessment of the situation as the guard is experiencing everything in real-time. Remote observation, represented by CCTV, allows for a wider range of viewing and monitoring. It gives the ability to record and review footage, so as to document incidents or review behavior patterns that weren't initially noticeable. They can survey large areas all at once, especially useful in scenarios where it's impossible or impractical for a guard to constantly be present. Alarm sensors, represented by the other choice, are also extensively used in security systems but are primarily used for indicating unauthorized access or intrusions rather than enabling active observation of suspicious behavior and changes in the environment. As a result, they do not factor into the answer. As such, the correct answer includes both in-person and CCTV methods of observation, corresponding to choice D. These two methods provide a comprehensive approach to surveillance, allowing for immediate response and broad coverage of the area being secured.