
Explanation:
Box 1: Azure AD authentication
Azure Active Directory authentication supports Multi-Factor authentication through Active Directory Universal Authentication.
Box 2: Contained database users
Azure Active Directory Uses contained database users to authenticate identities at the database level.
Incorrect:
SQL authentication: To connect to dedicated SQL pool (formerly SQL DW), you must provide the following information:
- Fully qualified servername
- Specify SQL authentication
- Username
- Password
- Default database (optional)
Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-authentication