Final answer:
The ability of a security guard to actively observe his or her surroundings while on patrol is a skill that needs to be consciously used and constantly practiced.
Step-by-step explanation:
The ability of a security guard to actively observe his or her surroundings while on patrol is a skill that needs to be consciously used and constantly practiced. It is not something that comes naturally and does not need to be practiced. This skill is important for the security guard to be aware of potential threats, identify suspicious activities, and take necessary actions to ensure the safety and security of the premises.