Explanation:
Box 1: No
Microsoft handles all patching and updating of the SQL and operating system code. You don't have to manage the underlying infrastructure.
Box 2: Yes
SQL Database is a fully managed service that has built-in high availability, backups, and other common maintenance operations.
Box 3: No
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/database/sql-database-paas-overview