Recovery time objectives (RTOs) are BEST determined by:

 Business managers are best suited to determine the recovery time objectives (RTOs) for their business processes and functions, as they have the knowledge and authority to assess the impact of downtime and the acceptable level of service continuity. RTOs are the maximum acceptable time that a business process or function can be disrupted before it causes significant harm to the organization’s objectives, reputation, or compliance. References = CISM Review Manual, 16th Edition, Chapter 5, Section 5.2.1.11