The MAIN reason for developing closed-circuit television (CCTV) as part of your physical security
program is to

A.
Provide hard evidence for criminal prosecution.

B.
Apprehend criminals.

C.
Deter criminal activity.

D.
Increase guard visibility.

Explanation:
A CCTV enables a guard to monitor many different areas at once from a centralized location. – Shon
Harris All-in-one CISSP Certification Guide pg 179-180