AWS Technical Essentials Practice

Restoring an Elastic Block Store (EBS) volume from a snapshot involves using a snapshot that has been created from an existing EBS volume. When you create a snapshot, it captures the state of the volume at that point in time. This is essential for data recovery or creating new volumes with the same data. Therefore, the concept of an "active snapshot" directly correlates with the process of restoring an EBS volume, indicating that the snapshot is available and ready to be used for the restoration process.

While Amazon Elastic Block Storage is a service that encompasses EBS volumes and snapshots, it does not specifically indicate the restoration process. An Amazon Machine Image (AMI) is used for creating virtual servers in Amazon EC2 but does not apply to EBS volume restoration in the same direct manner. Amazon Route 53 is a DNS web service and has no role in EBS volume management or snapshots. Hence, the choice of an active snapshot is the most relevant and correct for the specific task of restoring an EBS volume.