Answer: Implement Cloud Spanner with the leader in North America and read-only replicas in Asia and Europe.

## Explanation **Option B (Cloud Spanner) is the correct answer** because: - **Global Consistency**: Cloud Spanner provides strong global consistency across regions, which is essential for financial data where consistency is critical - **Multi-Region Deployment**: Cloud Spanner supports leader configuration in one region (North America) with read-only replicas in other regions (Asia and Europe), providing low-latency access globally - **ACID Compliance**: As a relational database, Cloud Spanner ensures ACID transactions across regions - **High Availability**: Automatic failover and global replication ensure high availability **Why other options are incorrect**: - **Option A (BigQuery)**: BigQuery is primarily an analytical data warehouse, not designed for transactional workloads with global consistency requirements - **Option C (Cloud SQL)**: While Cloud SQL supports read replicas, it doesn't provide the same level of global consistency and automatic failover as Cloud Spanner for multi-region deployments - **Option D (Cloud Bigtable)**: Cloud Bigtable is a NoSQL database optimized for high-throughput workloads but doesn't provide the same transactional consistency guarantees as Cloud Spanner For financial data requiring global consistency with low-latency access across North America, Asia, and Europe, Cloud Spanner is the most appropriate choice.

Author: LeetQuiz .