Final answer:
The best option for rolling back to a previous state following a server problem is ‘Last Known Good Configuration’, as it allows the system to start with the last set of settings that worked correctly.
Step-by-step explanation:
If you wanted to roll back to a previous state following a server problem, the most appropriate Advanced Boot option to use would be C) Last Known Good Configuration. This option starts your server with the last set of system settings that worked correctly. It's especially useful if you've installed new drivers or system updates that have since caused the server to become unstable or unbootable.
Safe Mode is a diagnostic mode, which could be helpful to troubleshoot but does not by itself revert to a previous state. Safe Mode with Networking includes network drivers and services needed to access the Internet and other computers on your network, again useful for troubleshooting. Disable Driver Signature Enforcement allows drivers that are not signed to be installed in Windows, which can be relevant when dealing with driver-related issues, but it doesn't revert the system to a previous state.