Which security measure should Ann use to limit the exposure of highly regulated data in her work area?

To limit the exposure of highly regulated data in Ann's work area, using a privacy screen is an effective security measure. A privacy screen is a physical filter that attaches to a computer monitor and narrows the viewing angle. This means that only someone directly in front of the screen can clearly see the content displayed, while others at an angle will see a darkened or distorted view.

This is particularly valuable in environments where sensitive information is displayed on a monitor, as it reduces the risk of unauthorized individuals viewing confidential information during meetings, in shared spaces, or even in open offices. Given that highly regulated data often carries considerable security implications, employing a privacy screen directly addresses the need to protect that data from inadvertent exposure.

While biometric devices and common access cards enhance authentication and access control, they do not directly prevent visual exposure of information on a screen. A cable lock can secure physical devices from theft but does not help with viewing privacy. Thus, a privacy screen best meets Ann's objective of safeguarding the visibility of sensitive data in her work area.