Explanation:

In Azure Security Center (now Microsoft Defender for Cloud) , different roles have different levels of permission. To meet the principle of least privilege , you must assign only the minimal role required for each action.
* Enable and disable Azure Defender
* Enabling or disabling Microsoft Defender plans (formerly Azure Defender) changes billing and protection settings at the subscription level .
* According to Microsoft documentation:
"Only users with the Subscription Owner or Security Admin roles at the subscription level can enable or disable Microsoft Defender plans."
* Because this change affects billing and overall subscription configuration, the Subscription Owner role is the appropriate one - it has full control at the subscription scope.
* Apply security recommendations to a resource
* Applying recommendations (such as enabling disk encryption or updating system patches) involves managing configuration settings on specific resources.
* The Resource Group Owner role provides full management access to all resources within that resource group, which includes the ability to implement or remediate recommendations.
* Microsoft Defender for Cloud guidance states:
"To apply recommendations or perform remediation tasks on specific resources, the user must have write permissions on those resources - typically provided by the Resource Group Owner or Contributor role."
# Final Correct Mapping:
* Enable and disable Azure Defender # Subscription Owner
* Apply security recommendations to a resource # Resource Group Owner