A team needs to deploy a web application on Azure using the Azure Web App service. The following are required- Send telemetry about the web application to Azure.
Scale the web application based on the status of availability-tests for the web application.
Where would you define the condition of basing the metric on Availability tests? 

Answer options:

A.Metric source
B.Metric namespace
C.Time aggregation
D.Metric name

Answer – D 
You can specify this as the metric name as shown below- 

Since this is clear from the implementation, all other options are incorrect. 
For more information on setting up scaling for your Azure web apps, please visit the following URL- 

https://docs.microsoft.com/en-us/azure/app-service/manage-scale-up