Your company has a Microsoft 365 tenant. The company has a call center that contains 300 users. In the call center, the users share desktop computers and might use a different computer every day. The call center computers are NOT configured for biometric identification. The users are prohibited from having a mobile phone in the call center. You need to require multi-factor authentication (MFA) for the call center users when they access Microsoft 365 services. What should you include in the solution? 

Answer options:

A. a named network location
B. the Microsoft Authenticator app
C. Windows Hello for Business authentication
D. FIDO2 tokens

D

Reference: https://docs.microsoft.com/en-us/azure/active-directory/authentication/concept-authentication-passwordless