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How can you ensure data is replicated to another region in Amazon RDS?
Explanation:
The correct answer is B - Using Read Replica feature.
Explanation:
Read Replica feature allows you to create read-only copies of your database instance in the same AWS Region or in different AWS Regions. Cross-region read replicas enable you to replicate data to another region for disaster recovery or to serve read traffic from locations closer to your users.
Multi-AZ feature (Option A) provides high availability within a single AWS Region by maintaining a synchronous standby replica in a different Availability Zone, but it does not replicate data to another region.
Database Migration Service (Option C) is used for migrating databases to AWS, not for ongoing replication.
AWS Backup (Option D) is for backup and recovery purposes, not for real-time data replication.
For more information on cross-region read replicas, refer to the AWS blog post: https://aws.amazon.com/blogs/aws/cross-region-read-replicas-for-amazon-rds-for-mysql/