When creating a new RDS instance, what does the Multi-AZ option do?
replicates backups of your database to S3 and makes them available across regions to prevent against any data loss
creates a second passive database instance within the same region that will become the primary database during a failover
creates a highly available database cluster that will host your database cluster in at least two regions
creates another database instance in another region and keeps a hot standby active to failover to during regional failures