To prevent unauthorized access to printed sensitive data on a shared printer in a high-traffic area, the best solution is to require user authentication via a PIN. This ensures that print jobs are only released when the authorized user is present at the printer, protecting sensitive information from being exposed. * A. Set up a PIN for user authentication at the printer: This allows users to securely release their print jobs only when they are physically at the printer, preventing unauthorized access. Why the other options are incorrect: * B. Relocate the printer to an unused office space: While this may reduce traffic, it doesn't ensure that sensitive data is protected from unauthorized access. * C. Configure printing of sensitive data through a specific tray: This wouldn't solve the issue of unauthorized users accessing sensitive prints. * D. Schedule print jobs to be released at certain times: This doesn't address the security concern of preventing unauthorized access to sensitive documents. This falls under the Hardware and Security domain of the CompTIA A+ Core 1 exam.