To speed up data retrieval, more vehicles will be upgraded to cellular connections and be able to transmit data to the ETL process. The current FTP process is error-prone and restarts the data transfer from the start of the file when connections fail, which happens often. You want to improve the reliability of the solution and minimize data transfer time on the cellular connections. What should you do?

The correct option improves reliability and minimizes transfer time by leveraging Google Cloud Storage's robust HTTP(S) API for direct uploads. This eliminates the unreliable FTP process entirely, which is prone to restarts and connection failures. Using Regional buckets, rather than Multi-Regional, is more cost-effective for data that is primarily accessed within a specific region and still provides high availability within that region. The other options either retain the problematic FTP protocol or introduce unnecessary complexity and cost with Multi-Regional buckets when Regional buckets suffice for regional data access patterns.