Answer: Resource monitor

The question asks what is used to limit the credit usage of a virtual warehouse in Snowflake. Resource monitors are specifically designed for this purpose - they can track and control credit consumption by virtual warehouses, allowing administrators to set credit quotas, suspend warehouses when limits are reached, and monitor usage patterns. The community discussion shows 100% consensus on option B (Resource monitor) with multiple upvoted comments confirming this is the correct answer. Load monitor (A) is not a Snowflake feature, Query Profile (C) is for analyzing query performance after execution, and Stream (D) is for change data capture, none of which control credit consumption.

Author: LeetQuiz Editorial Team