When is a security guard the best choice for a physical access control mechanism?

A.
When discriminating judgment is required

B.
When intrusion detection is required

C.
When the security budget is low

D.
When access controls are in place

Explanation:
Although there are many effective physical security mechanisms on the
market today, none of them can look at a situation and make a judgment about it and
make a decision on what the next step should be. A security guard is employed when a
company needs to have a countermeasure who can think and make decisions in different
scenarios.