An essential element of an incident response plan is Business Continuity and Disaster Recovery provisions. They ensure that during and following an incident, the company can maintain critical operations, minimize downtime, and restore normal operations as swiftly as possible. Naming team members is important, but it's only part of the overall incident response plan, and it doesn't necessarily relate to continuity of business operations. While timeline for future reviews is a part of sustaining the incident response plan, it is not a direct element for ensuring continuous operations during a breach. Regularly updating security policies is a proactive measure, but it is not specific to maintaining operations during an incident.