What is a key feature of Active Directory Rights Management Services (AD RMS)?

Active Directory Rights Management Services (AD RMS) is designed primarily to protect sensitive information by allowing users to define and enforce permissions regarding document access. This capability enables organizations to control who can view, edit, copy, or print documents, thereby safeguarding confidential data from unauthorized use. By specifying permissions, users can ensure that only authorized personnel have access to particular documents, which is crucial for maintaining data security and compliance with regulations.

The other options, while important in their own right, do not capture the essence of what AD RMS offers. Automatic updates pertain more to software maintenance rather than rights management. Strong password policies are a function of account security, which is distinct from document access controls. Regular data backups focus on data availability and recovery but do not relate specifically to the management and restriction of document access. Thus, the ability to define permissions for document access is the central and defining feature of AD RMS.