You need to validate the Power Apps app security and guide your test team. 
What are the four security levels of the app the team needs to test?

Answer options:

A.App
B.Data Import
C.Form
D.Row
E.Controls
F.Column

Correct Answers: A, C, D and F 
When Solution Architects design a Power Apps app, they need to define the app’s level of security. There are four levels: App — this level controls access to the app.
Form — this level controls the data access and input based on a job role. For example, you can limit access security groups to certain forms in model-driven apps.
Row — this level uses the Dataverse security model to control records access. You can set up access to individual records.
Column — this level controls the column access within a single record.
A Solution Architect must guide the test team on what and how to test all these layers if they are implemented for the app. The security testing should include test cases with dedicated test users in different security roles to ensure that Power Apps app security holds up. 
All other options are incorrect. 
For more information about security testing of the app, please visit the below URLs: 

https://docs.microsoft.com/en-us/learn/modules/project-test-process/1-introduction
https://docs.microsoft.com/en-us/powerapps/guidance/planning/security
https://docs.microsoft.com/en-us/learn/modules/model-security/5-apps