Final answer:
In full security guard uniform, a name tag with the guard's name, the employing company's name, and the word SECURITY must all be clearly visible, with the correct answer being d) All of the above.
Step-by-step explanation:
When a security guard is in full uniform, it is generally required that certain information be clearly visible to everyone. This typically includes a name tag with the guard's name, the name of the company that employs the guard, and most importantly, the word SECURITY to indicate the role and purpose of the individual. Therefore, the correct answer is d) All of the above. These requirements help ensure transparency and accountability, while also providing necessary information to the public in various security-related scenarios.