You troubleshoot a canvas app using the Azure Application Insights. You add the event trace to your code. 
Please select all the message severity levels that the trace sends to Application Insights logs.

Answer options:

A.Information
B.Debug
C.Notice
D.Warning
E.Critical
F.Error

Correct Answers: A, D and F 
Application Insights is the feature of Azure Monitor. It can help makers and developers to collect and analyze the canvas app telemetry. Application Insights provides information like the number of sessions, number of the logged events, number of app users. 
Developers can even trace the app`s event executions by incorporating the Trace command within the app`s code. 
Then they use Azure Logs and Kusto to analyze the Trace output. Or makers and developers might use Power BI for a visual representation of the Trace results. 
The Trace function can help you collect information about errors, specific app users, and screen controls usage details. 
The trace sends messages with three severity levels: Information, Warning, and Error. 
All other options are the typical log severity levels, but the Power Apps tracer produces messages only with severity levels, as mentioned above. 
For more information about using trace and Application Insights to troubleshoot canvas apps, please visit the below URLs: 

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/application-insights#create-custom-trace-events
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-trace
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/application-insights