Hello
The correct answer is A
 because he can navigate to the screen where   If a user is registered Then only any role is assign to him , every user must be registered to get a role and register role is by default provided when a user is reated.

option B -  User can navigate to the Anonymus screens whether he has role or not , whether he is registered  or noto

option c  - this is incorrect because when you check a registered role on a screen all the roles will be selected , give it a try

option d is incorrecet because he have access to the screen with admin role check as well as on pages where the registered role is check and to the pages where anonymus role is checked.

Hope this helps 

Thanks