You need to integrate the Azure DevOps release pipeline with ServiceNow Change Management. 
The pipeline should deploy updates with ServiceNow approval of the changes. 
What will you add to your pipeline to achieve your goal?

Answer options:

A.Post-deployment trigger
B.Pre-deployment approval
C.Post-deployment gate
D.Post-deployment approval
E.Pre-deployment trigger
F.Pre-deployment gate

Correct Answer: F 
Azure DevOps integrates with several Microsoft and third-party applications like GitHub, Jira, Teams, Slack, ServiceNow, etc. 
ServiceNow is an enterprise platform that helps users with their technical management workflows. The company is focused on the management of IT services (ITMS), IT operations (ITOM), and IT business (ITBM). One of the typical integration cases between Azure DevOps and ServiceNow is an approval of CI/CD pipeline changes. 
To create an approval process, you need to request the ServiceNow changes and approval. You use the Pre-deployment gate and add the ServiceNow Change Management extension. Before this, you must add the extension to your Azure DevOps Organization and create a service connection to ServiceNow. After changes are recorded in ServiceNow and the gate’s success state is achieved, the pipeline proceeds with the deployment, and the change request will be closed. 
All other options are incorrect. 
For more information about Azure DevOps and ServiceNow integration, please visit the below URLs: 

https://docs.microsoft.com/en-us/azure/devops/pipelines/release/approvals/servicenow?view=azure-devops
https://docs.microsoft.com/en-us/azure/devops/pipelines/release/deploy-using-approvals?view=azure-devops