What is the primary function of Group Policy in Windows?

Correct answer: Configure security settings and system behavior across users and computers

Option D is correct because Group Policy is an Active Directory infrastructure feature that allows administrators to centrally define and enforce security settings, desktop configurations, software restrictions, and system behaviors for users and computers across an entire domain or organizational unit. Option A is wrong because while Group Policy can configure NTFS and share permissions indirectly, dedicated file permission management is handled through NTFS ACLs and share permissions directly, not through Group Policy as a primary function. Option B is wrong because network traffic monitoring is the role of tools such as Network Monitor, Wireshark, or Windows Performance Monitor, not Group Policy. Option C is wrong because although Group Policy can assign or publish software packages via Group Policy Software Installation, software deployment is a secondary capability, not the primary function of Group Policy.