Basic Concept: This question tests high availability and disaster recovery design for Azure SQL, SQL Server on Azure VMs, and regional failure scenarios.

Why B is Correct: Owner is a security-related control, but its value depends on whether the requirement is identity, encryption, auditing, network isolation, or data exposure reduction. The scenario asks for: You need to ensure that User1 can delete LTR backups of DBl. That makes Owner the option that satisfies the required Azure SQL layer and operational outcome.

Why A is Wrong: SQL Server Contributor is a security-related control, but its value depends on whether the requirement is identity, encryption, auditing, network isolation, or data exposure reduction. It does not satisfy the required identity, encryption, firewall, auditing, or data-exposure boundary described in the scenario: You need to ensure that User1 can delete LTR backups of DBl.

Why C is Wrong: SQL Security Manager is a security-related control, but its value depends on whether the requirement is identity, encryption, auditing, network isolation, or data exposure reduction. It is not the right enforcement point for this case; the scenario needs the control that governs the data or identity path being tested.

Why D is Wrong: Contributor is a security-related control, but its value depends on whether the requirement is identity, encryption, auditing, network isolation, or data exposure reduction. It does not satisfy the required identity, encryption, firewall, auditing, or data-exposure boundary described in the scenario: You need to ensure that User1 can delete LTR backups of DBl.