What policy tasks require using the VPM and cannot be performed in CPL?

The correct answer highlights the capabilities unique to the Visual Policy Manager (VPM) as opposed to the Content Policy Language (CPL). The VPM provides a graphical interface that simplifies complex policy management tasks that cannot be executed through CPL alone.

Specifically, VPM-XML is a format that interacts with the graphical interface of the VPM, allowing for advanced policy design and management that goes beyond simple text scripting. These tasks might include creating intricate policies that require a visual representation or a combination of various policy components in a more user-friendly way, which CPL does not support.

Options mentioning VPM-CPL and administrator tasks could imply a combination of VPM and CPL functions, but they do not signify unique capabilities restricted to the VPM's environment. Similarly, standard policy updates can generally be managed through both the VPM and CPL, showcasing that they are not exclusive to either tool.

Thus, it is the ability to utilize VPM-XML with the VPM that sets it apart for specific tasks that CPL cannot perform, confirming the correctness of the chosen answer.