The suggested answer is B.
Security groups are used to assign permissions to access resources. They can be used to manage user and computer access to shared resources, enforcing security policies and controlling what resources a user can access within a network. A workgroup is a simpler arrangement for sharing files and printers without centralized security management. An organizational group is not a standard term for managing permissions, and a distribution group is used for email distribution lists, not for assigning permissions to access resources.