正解:C
The most important consideration when defining a recovery strategy in a business continuity plan (BCP) is understanding the organization's tolerance to service interruption, which is typically defined by Recovery Time Objective (RTO) and Recovery Point Objective (RPO). These factors determine how quickly services must be restored and how much data loss is acceptable, directly influencing recovery strategies. While legal requirements, backup site location, and disaster likelihood are important, they are secondary to ensuring the recovery strategy aligns with business continuity needs.