The question addresses queuing in a virtual warehouse, indicating that queries are waiting for resources. Based on Snowflake documentation and community consensus, the optimal solutions are: C) Change multi-cluster settings to add clusters, which dynamically scales compute to handle concurrent queries within the same warehouse, and D) Start a separate warehouse and move queued queries, which immediately offloads the queue to new compute. Both are valid per Snowflake's guidance for high load or queuing. Option A (decrease warehouse size) would worsen queuing by reducing capacity. Option B (decrease MIN_CLUSTER_COUNT) is irrelevant as it controls minimum clusters in multi-cluster warehouses but doesn't resolve active queuing. The community discussion shows support for both C and D, with upvoted comments citing Snowflake docs that recommend these actions for queuing scenarios.