Explanation
Enabling NTUSER.DAT backup allows Profile Management to maintain a last known good backup of the NTUSER.DAT file and use it to recover the profile if corruption is detected. This can help prevent data loss from users' profiles. According to the Registry policy settings document, "If you do not configure this policy here or in the.ini file, Profile Management does not back up NTUSER.DAT." The other options are not relevant to preventing profile corruption or data loss.