Enable each analytics team to monitor BigQuery slot usage within their own project. Which implementation should you choose?

The correct option is to create a Cloud Monitoring dashboard based on the BigQuery metric slots/allocatedforproject. This metric directly reflects the number of BigQuery slots allocated to a specific project, providing a clear and immediate view of slot usage. Cloud Monitoring is designed for this type of operational visibility, offering built-in metrics and easy dashboard creation. The other options are less efficient or incorrect for monitoring allocated slots. query/scannedbytes measures data processed, not slot allocation. While custom metrics from totalSlotMs in logs can track actual slot consumption, they require more complex setup (log exports, custom metrics) and don't directly show the allocated slots for a project, which is what the question asks to monitor.