To assign watermarks to meetings and configure end-to-end encryption (E2EE) for meetings, a user requires a Microsoft Teams Premium license.

According to official Microsoft documentation, while basic E2EE for 1:1 calls is available in standard licenses, the ability to apply End-to-end encryption for meetings (up to 200 participants) and use Watermarking (for both video feeds and shared content) are specific advanced features bundled under the Teams Premium add-on. Looking at the provided table, only User2 is licensed for Microsoft Teams Premium. User1 and User3 have Microsoft 365 E5, which includes many security features but does not inherently include the specific Teams Premium features required for meeting watermarking and meeting E2EE.

A. User1 only: User1 has Microsoft 365 E5. While E5 is a high-tier license, it does not include Teams Premium features like meeting watermarks or meeting-wide E2EE by default.

C. User3 only: User3 has Microsoft 365 E5 and Teams Rooms Pro. Teams Rooms Pro provides advanced management for room devices but does not grant the user Teams Premium meeting features.

D. User2 and User3 only: While User2 is correct, User3 lacks the Teams Premium license. Teams Rooms Pro is a device-based license and does not satisfy the requirement for user-level Premium features.

E. User1, User2, and User3: Only User2 possesses the specific Microsoft Teams Premium license required for the requested advanced meeting security and protection features (watermarking and meeting E2EE).

Microsoft Documentation: "Microsoft Teams Premium licensing - Features overview," Section: Meeting protection (Watermarking, E2EE for meetings).

Microsoft Support: "Require end-to-end encryption for sensitive Teams meetings," Requirement: Teams Premium license.

Microsoft Learn: "Add a watermark to Teams meetings," Prerequisites: Microsoft Teams Premium.

Microsoft Documentation: "Microsoft Teams Rooms Pro licenses," Section: Comparison with user licenses (confirming Pro does not include user Premium features).