Which feature ensures that only approved users can access specific Azure services based on defined roles?

Role-Based Access Control (RBAC) is the correct answer because it allows you to manage who has access to Azure resources, what they can do with those resources, and what areas they can access. You assign roles to users, groups, or applications at a specific scope (subscription, resource group, or resource). This ensures that only approved users with the necessary permissions can interact with specific Azure services. Azure Policy helps enforce organizational standards and assess compliance, but it doesn't directly manage user access to services. Azure Monitor collects and analyzes telemetry data from your Azure resources, focusing on performance and availability, not access control. Azure Blueprints define a repeatable set of Azure resources that implement and adhere to an organization's standards, acting as a deployment mechanism rather than an access control mechanism.