Which of the following is a primary purpose of a CCTV system?

A primary purpose of a CCTV system is to monitor and record activities for security purposes. This is fundamental to the operation of any closed-circuit television setup. CCTV systems are primarily designed to enhance safety and security by providing surveillance in various environments, such as public areas, businesses, and homes. They serve as a deterrent to potential criminal activity and aid in the identification and documentation of incidents if they occur.

While enhancing aesthetic appeal, reducing operational costs, and providing internet access may be associated with certain technologies, they are not the core functions of a CCTV system. The essence of using CCTV is rooted in surveillance and crime prevention, which is why the correct answer specifically highlights monitoring and recording activities for security purposes.