Your organization's application uses a variety of GCP services and is deployed across multiple regions. You are required to set up a unified logging and monitoring solution. Which of the following approaches will meet this requirement?

*Explanation:* To achieve a unified logging and monitoring solution for an application that uses multiple GCP services and is deployed across multiple regions, the best approach is to **use Cloud Monitoring and Logging with custom dashboards**. This allows you to centralize your logging and monitoring data, create custom dashboards to visualize important metrics, and gain insights into the performance and health of your application. The other options (A, C, D, E) may introduce complexity, lack native integration, or not provide the same level of unified monitoring and visibility that Cloud Monitoring and Logging offer.