Which solution should a security administrator implement to reduce time spent on common security tasks without increasing staff?

The best solution for reducing time spent on common security tasks without increasing staff is SOAR, which stands for Security Orchestration, Automation, and Response. SOAR platforms are designed to automate and orchestrate repetitive security tasks, allowing security teams to work more efficiently. By implementing SOAR, a security administrator can streamline workflows, integrate various security tools, and allow for automatic responses to alerts and incidents, thus minimizing manual workload. This leads to faster incident response times, improved security posture, and more focused personnel who can handle complex tasks rather than repetitive ones.

While the other options, such as DAC (Discretionary Access Control), ABAC (Attribute-Based Access Control), and SCAP (Security Content Automation Protocol), have their specific uses in managing security and compliance, they do not inherently focus on automating tasks or orchestrating processes to a degree that SOAR does. Therefore, for the goal of reducing time on common tasks without increasing staff, SOAR is the most appropriate choice.