Which feature ensures Azure database backups are encrypted and stored with geo-redundancy?

Azure Backup with Geo-Redundant Storage (GRS) is the correct option because it specifically combines the backup service with geo-redundancy and encryption capabilities for databases. Azure Backup ensures data is encrypted both in transit and at rest. GRS replicates your data to a secondary region hundreds of miles away, providing protection against regional outages. Zone Redundant Storage (ZRS) replicates data across multiple availability zones within a single region, offering high availability but not protection against regional disasters. Azure Blob Snapshots create point-in-time copies of blobs, but they are not a comprehensive backup solution for databases and don't inherently provide geo-redundancy or encryption for the entire database backup process. Read-Access Geo-Redundant Storage (RA-GRS) provides geo-redundancy and read access to the secondary region, but it's a storage account redundancy option, not a dedicated backup service that ensures encrypted database backups.