Answer: 60 seconds

In Snowflake, virtual warehouses are billed in one-minute (60-second) increments. When a suspended warehouse is restarted, it incurs charges for a minimum of 60 seconds, regardless of how briefly it's actually used. This billing policy is clearly stated in Snowflake documentation and confirmed by the community discussion, where all comments unanimously select option B with supporting explanations about the 60-second minimum billing increment.

Author: LeetQuiz Editorial Team