A+ Question of the Week: Resolve the Instability

The correct answer is A.

The System Restore feature creates a restore point daily by default and is the best option under the circumstances described.

Last Known Good Configuration is a preferable step before System Restore, but the last known good control set only changes upon logging on to Windows. Hibernation stores the current session on the hard drive and subsequently resumes from there, without performing an actual boot cycle and logon. Although the user can be asked for their password, this is not a logon, but instead similar to entering their password to cancel the screen saver and resume work. The question states that the optimal choice, driver rollback, is unavailable due to not knowing the exact cause of the instability. Automated System Recovery is entirely too destructive to be a first choice if there are other options available.