You have been assigned the task of setting up an Azure Virtual Desktop environment in your company. Which of the following subscriptions would you need to set up an Azure Virtual Desktop?

Answer options:

A.Azure Subscription
B.Windows 10 Enterprise
C.Microsoft 365 Subscription
D.Windows 7 Enterprise

Correct Answer: A 
To get started with AVD (Azure Virtual Desktop), you need access to an Azure AD tenant environment with an account having an Azure subscription.
Option A is correct. AVD runs in Azure as an Azure service. It also requires other Azure services like Azure Virtual Network, Azure Active Directory, and Azure Storage that can be accessed through Azure subscription.
Option B is incorrect. You can use your Windows 10 licenses with AVD. But a subscription isn`t needed.
Option C is incorrect. Azure Virtual Desktop doesn`t run in Microsoft 365.
Option D is incorrect. You can use your Windows 7 licenses with AVD. But a subscription isn`t needed.
Reference: 
To know more about Azure Virtual Desktop, please visit the below-given link: 

https://docs.microsoft.com/en-us/azure/virtual-desktop/overview#supported-virtual-machine-os-images