Your network contains an Active Directory domain. The domain contains computers that run Windows 10.
All users use Roaming User Profiles.
You have a user named Public1 that is used to sign-in to a public computer.
You need to prevent changes to the user settings of Public1 from being saved to the user profile.
What should you do?
To prevent changes to the user settings of Public1 from being saved to the user profile, you need to rename the Ntuser.dat file to Ntuser.man. Renaming the file to Ntuser.man makes the profile a read-only profile, also known as a mandatory profile. When the profile is mandatory, any changes made during a session are not saved when the user logs out. This ensures that Public1's user settings are not retained after each session.
C. is correct. https://docs.microsoft.com/en-us/windows/client-management/mandatory-user-profile
I think A is the correct answer. All users have roaming profiles, and the request says "You need to prevent changes to the user settings of Public1 from being saved to the user profile" (only Public1). C option applies to all users, if you choose super-mandatory profile, you can set mandatory profile only to Public1 ( https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/bb776895(v=vs.85) )
Every user has a NTUSER.DAT when the user signs in, you rename the NTUSER.DAT to NTUSER.MAN for that user.
To create a mandatory roaming profile, the ntuser.dat file (located at the root of the profile) is renamed to ntuser.man. This may be stored in a network share identified as \\DC1\Profiles.