Microsoft Certified: Azure Fundamentals (AZ-900) Practice Exam

The correct choice is based on how Azure Policy operates in defining and enforcing policies within an Azure environment. Each policy definition in Azure Policy has a specific effect that dictates how resources are managed according to the rules set forth in the policy. A policy definition can enforce certain behaviors by specifying a single effect, such as "Deny," "Append," or "Audit." This effect details what actions should be taken if a resource doesn't comply with the established policy. The notion of a single effect ensures clarity and predictability in how Azure interprets and applies the policy. The other concepts related to multiple or double effects imply that a policy could enforce more than one effect simultaneously, which is not how Azure Policy is designed. Each policy definition focuses on a singular intent to simplify governance and compliance management within Azure resources.