What is a domain?(within the context of AD)
a. A domain is a group of computers and devices that are part of a network and share a common database and security policies.
b. A domain is a hierarchical grouping of computers, objects, and resources that share a common set of rules and procedures.
c. A domain is a specific administrative boundary within Which resources and objects are controlled and managed.
d. A domain is a namespace that is used to organize and manage objects within an Active Directory (AD) environment.