You want to show data from Azure SQL Database in the Power Apps portal app. 
What should you do?

Answer options:

A.Use Azure SQL Database connector to stream data to a portal app
B.Create a canvas app with access to Azure SQL Database data and embed it in a portal app
C.Import Azure SQL Database data to the Dataverse and expose Dataverse data in a portal app
D.Import Azure SQL Database data into SharePoint as a list and expose it in a portal app

Correct Answer: C 
Power Apps portal apps are external websites for interaction with Dataverse data only. Because portal data is stored in Dataverse, you don’t need to use other connectors. It helps users to focus on the information that they want to present in the portal. 
To expose data from Azure SQL Database, you need to import data into Dataverse first and then use it in the portal app. You can click on the "Get Data" toolbar item in the Power Apps portal to open the data connectors catalog. Under the Azure tab, you will find Azure SQL Database. After you provide all required information for the data access, you can import data into your Dataverse environment and use it in the Power Apps portal. 

All other options are incorrect because the Power Apps portal app uses only data from the Dataverse database. 
For more information about the Power Apps portal apps, please visit the below URL: 

https://docs.microsoft.com/en-us/powerapps/maker/portals/overview