Which type of security control includes the use of security guards?

The choice indicating that security guards are a type of control categorized as deterrence controls is correct because deterrence controls are designed to prevent unwanted actions by instilling a sense of fear of detection or punishment. The presence of security guards serves this purpose effectively; their physical visibility can dissuade individuals from attempting unauthorized activities, such as theft or vandalism, because these individuals perceive a higher risk of getting caught.

Deterrence controls rely on the psychological impact they create. Security guards can serve both as a physical presence to disrupt inappropriate actions and as an authoritative figure who can intervene if necessary. This combination reinforces the idea that security guards act to deter crime before it happens.

In contrast, preventative controls focus on measures that are put in place to avoid security breaches altogether, such as firewalls or encryption. Detection controls are aimed at identifying and alerting on existing incidents, while corrective controls are employed after a security breach has occurred to mitigate damage and restore systems. Thus, while all these types of controls are important in a comprehensive security strategy, the role of security guards aligns most closely with the goals of deterrence controls.