Amazon S3 Glacier is the correct answer because it provides secure, durable, and low-cost storage designed for data archiving and long-term backup. It suits the scenario of storing high-resolution images that are infrequently accessed. Amazon S3 Glacier offers retrieval times from minutes to hours, which is acceptable in this context.

Amazon S3 Standard is not the best choice because it is designed for frequently accessed data and has higher storage costs compared to Amazon S3 Glacier. Amazon EFS is suitable for file-based storage, not for archiving, and Amazon EBS provides block storage volumes for use with EC2 instances, which also doesn't correspond to archival needs.