Correct answer is Client Management
* Anypoint Platform acts as a client provider by default, but you can also configure external client providers to authorize client applications.
* As an API owner, you can apply an OAuth 2.0 policy to authorize client applications that try to access your API. You need an OAuth 2.0 provider to use an OAuth 2.0 policy.
* You can configure more than one client provider and associate the client providers with different environments. If you configure multiple client providers after you have already created environments, you can associate the new client providers with the environment.
* You should review the existing client configuration before reassigning client providers to avoid any downtime with existing assets or APIs.
* When you delete a client provider from your master organization, the client provider is no longer available in environments that used it.
* Also, assets or APIs that used the client provider can no longer authorize users who want to access them.
-------------------------------------------------------------------------------------------------------------MuleSoft Reference: https://docs.mulesoft.com/access-management/managing-api-clients
https://www.folkstalk.com/2019/11/mulesoft-integration-and-platform.html

Correct answer is Workers are randomly distributed across available AZs within that region. This ensure high availability for deployed mule applications Mulesoft documentation reference :
https://docs.mulesoft.com/runtime-manager/cloudhub-hadr