Elaine wants to adopt appropriate response and recovery controls for natural disasters. What type of control should she use to prepare for a multi-hour power outage caused by a tornado?

A generator is the most appropriate answer to a multi-hour outage. Although a hot site would allow her organization to stay online, the cost of a hot site is much higher than that of a generator. A PDU, or power distribution unit, is used to manage and distribute power, not to handle power outages. Finally, UPS systems are not typically designed to handle long outages. Instead, they condition power and ensure that systems remain online long enough for a generator to take over providing power.