Badging is a form of authentication that requires employees to use a badge or ID card to release print jobs. This solution reduces unnecessary printing by ensuring only authorized users print. * Why Not A (Access control list): While ACLs manage permissions, they are not used for physical authentication at printers. * Why Not B (Audit logging): Audit logs track actions but do not restrict printer access. * Why Not D (Print server): A print server manages print jobs but doesn't enforce authentication. CompTIA A+ Exam Reference: Core 2 (220-1102), Section 2.5, authentication mechanisms.