A company wants you to help design a Power Apps app. The app should use the existing data. 
What are the three ways the app can use the data?

Answer options:

A.Flow
B.Dataflow
C.Report
D.Connector
E.Dashboard
F.Virtual table

Correct Answers: B, D and F 
Power Platform can access the data from various data sources. 
The Connector is one of the main tools for data access for Power Apps apps. Using connectors, the apps can bring data from almost 400 data sources. Power Platform allows you to create your own connectors if needed. 
The Dataflow is enterprise-wide data preparation and data load cloud service. It uses a Power Query data transformation process. The dataflows can bring data into Dataverse or store it in Common Data Model format inside Azure Data Lake Gen2 Storage. Dataflows can use all Power Platform data connectors to extract, transform and prepare data for further consumption by Power BI datasets, Power Apps, Power Automate, Power Virtual Agents, and Dynamics 365 applications. 
The Virtual table creates the representation of non-Dataverse data sources inside the Dataverse in a table form. You can read and write the data in a virtual table, and the Dataverse takes care of the data synchronization. 
All other options are incorrect. 
For more information about Power Apps app data access, please visit the below URLs: 

https://docs.microsoft.com/en-us/learn/modules/data-modeling/4-data-store
https://docs.microsoft.com/en-us/connectors/connectors
https://docs.microsoft.com/en-us/power-bi/transform-model/dataflows/dataflows-introduction-self-service
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/virtual-entities/get-started-ve