To which of the following Active Directory objects can permissions be assigned?

Permissions in Active Directory can be assigned to a variety of objects to control access and manage security within an organization. Users, groups, and computers are all types of Active Directory objects to which permissions can be assigned, allowing administrators to specify what actions each object can perform in the directory.

Users are individual accounts that represent people or services, and permissions can be tailored to control their access to resources such as files, applications, or network services. Groups, which are collections of user accounts, can also have permissions assigned to them. This is particularly useful for simplifying the management of permissions because assigning access to a group automatically grants the same access to all users within that group.

Computers, represented as objects in Active Directory, can also have permissions assigned. This allows for the management of devices on a network, specifying what they can access or perform within the directory.

Because permissions can be assigned to all these types of objects—users, groups, and computers—it's accurate to state that permissions can be assigned to all of the above categories, reflecting a comprehensive management approach within Active Directory.