DRAG DROP
You need to implement resource security and authentication.
For each requirement, which solution should you implement? To answer, drag the appropriate solution to the
correct requirement. Each solution may be used once, more than once, or not at all. You may need to drag the
split bar between panes or scroll to view content.
Select and Place:
Answer: 
Why the 2nd answer isn’t Azure Active Directory B2C?
yes
We are missing much of this question. I’m guessing this is part of a case study or there is a graphic missing. What is the DataViewer application? On-prem, in Azure or in AWS? Who knows what that app’s requirements are?
https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-reference-ui-customization
B2C is for Business to Consumer – uses third party logins like Facebook, Google, etc. Valid answer