The correct answer is Option B, 'Object storage with a public bucket and CDN integration.' Object storage is designed to handle large amounts of unstructured data and can scale out as needed. The use of buckets allows for easy management of storage objects. Integrating with a CDN ensures that content is cached and delivered quickly to users worldwide, which is essential for frequently accessed static web content. Option A, 'Block storage with RAID 6,' is not the best choice as block storage is typically used for transactional data, not for serving static web content. RAID 6 would offer data redundancy but would not address global accessibility or the most efficient delivery of content. Option C, 'File storage with NAS and high IOPS,' while suitable for many scenarios, is not optimal for static web content that must be delivered globally—high IOPS target performance rather than geographic distribution or cost-efficiency for serving files. Option D, 'Object storage with versioning enabled for archived data,' provides the benefits of object storage but the versioning feature is generally used for data with frequent updates and doesn't specifically address the cost-efficiency or scalability for static content distribution on a global scale.