You are asked to design a global transactional database that can automatically scale in response to application traffic. The database should also provide backup capabilities to handle unforeseen data loss. Which GCP service should you recommend?

*Explanation:* For a global transactional database that can automatically scale and provide backup capabilities, the most suitable GCP service is **Cloud Spanner (option C. **. Cloud Spanner offers global distribution, automatic scalability, and built-in backup functionality. It is designed to handle transactional workloads across the globe while ensuring data integrity and availability. The other options may not provide the same level of global scalability and backup features required for this use case.