Which of the following statements about Amazon SQS is true?

The statement indicating that queues can be created in any Region is true. Amazon Simple Queue Service (SQS) is designed to be a region-specific service, allowing users to create queues in various geographic regions according to their application needs and compliance requirements. This flexibility enables developers to deploy applications closer to their end-users or meet specific regulatory standards by selecting the appropriate AWS Region for their resources.

Each AWS Region operates independently, so when you create a queue, you have the ability to choose from the available regions in which to deploy that queue. This distributed nature helps applications enhance performance and availability by reducing latency for users in different geographies.

In contrast, the other statements do not accurately reflect the characteristics of Amazon SQS. For example, while SQS provides a "best-effort" delivery mechanism, messages can be processed multiple times due to retries, meaning that messages are not guaranteed to be processed exactly once. Furthermore, SQS stores messages redundantly across multiple servers and data centers for high availability and durability. Finally, queues are not limited to a single data center; they can be replicated across multiple data centers within the chosen AWS Region to ensure reliability.