Final answer:
A security guard should always avoid ego, aggressive demeanor, and emotion when enforcing rules and regulations.
Correct option is d.
Step-by-step explanation:
When attempting to enforce the rules and regulations of a site, a Security Guard should always avoid ego, aggressive demeanor, and emotion. These negative qualities can impede effective communication and conflict resolution, and can create a hostile environment.
Instead, a security guard should strive to be calm, professional, and unbiased in carrying out their duties.