Cisco UC platform consists of which 3 featured products?

"Unified Manager" is too generic and could refer to various management tools, and "HD Video" is a feature or capability, not a distinct featured product in the same way as the other options.

"HD Video" is a feature or capability, not a distinct featured product that forms part of the core platform suite.

This option only lists two products instead of the required three for the question.

The core Cisco Unified Communications (UC) platform often features Cisco Webex Teams (now Webex App) for messaging, meetings, and collaboration, Cisco Business Edition 6000 (BE6000) as an integrated voice and video communication solution for mid-sized businesses, and Cisco Unified Communications Manager (CUCM) as the primary call control and session management system. These three products collectively represent a comprehensive UC offering.