You need to recommend a solution to generate a monthly report of all the new Azure Resource Manager resource deployments in your subscription.

What should you include in the recommendation?

A. the Change Tracking management solution
B. Application Insights
C. Azure Monitor action groups

D. Azure Activity Log

Explanation:
Activity logs are kept for 90 days. You can query for any range of dates, as long as the starting date isn’t more than 90 days in the past.

Through activity logs, you can determine:

• what operations were taken on the resources in your subscription
• who started the operation
• when the operation occurred
• the status of the operation
• the values of other properties that might help you research the operation

Reference:
https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/view-activity-logs