Which type of system must you connect to and use to make changes to Active Directory?

a. RODC

b. Forest Master

c. writable domain controller

d. domain tree

c. Writable domain controller.

Explanation:

To make changes in an active directory a writable domain controller.

Read Only domain controllers (RODC) : - It is basically a server it responds to requests of security authentication and It hosts an active directory database's read-only partitions.

This is not the case with writable domain controller since it can make changes to the Active directory.