Answer:
A. Domain-level group policies
Step-by-step explanation:
Because domain-level polices are automatically implement all users that are login on the PC and PC is connect to the domain. From domain polices you can set what user can open and what can not open, Joe Windows PC he is using automatically locks also through domain policy, Administrator set the time when any end-user leave their PC automatically after the time set administrator screen saver run and asked password of that user to return back in the windows.