What should you do?

You have a Microsoft Exchange Server 2019 organization.

You implement hybrid connectivity to Microsoft 365.

You need to ensure that users can use the Microsoft Outlook mobile app on their device to access their onpremises mailbox.

What should you do?
A . Run Azure AD Connect.
B. Run Set-CASMailbox -OutlookMobileEnabled for each user.
C. Enable Hybrid Modern Authentication (HMA).
D. Configure Active Directory Federation Services (AD FS).

Answer: C

Explanation:

Reference: https://techcommunity.microsoft.com/t5/exchange-team-blog/announcing-hybrid-modern-authentication-forexchange-on-premises/ba-p/607476