After you committed code to the master branch, GitHub triggered a workflow bellow. But unfortunately, it failed before Login to Azure step. 

What should you correct in the script to make the next run successful?

Answer options:

A.Add " - name: Fetching Code" on the next line after "steps:"
B.Modify "actions/checkout" to "GitHub actions/checkout"
C.Modify "actions/checkout" to "actions/checkout@dev/release"
D.Modify "actions/checkout" to "actions/checkout@master"

Answer – D 
Before building an application, GitHub needs to check out code from the Repo for the build. For this operation, we need to supply the branch name. In our case, we are instructing to use the code for the master branch. 

Other options are incorrect. 
For more information about workflow syntax for GitHub Actions, please visit the below URL- 

https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobs