During which period of disaster is the approaching danger usually minutes or hours in duration, with behavior often manifested by over-activity?

The correct choice is the Warning Period. This phase occurs immediately before a disaster happens, during which the danger is imminent, and individuals are often alerted to prepare or take action. In this short timeframe, typically measured in minutes or hours, people tend to exhibit heightened alertness and responsiveness, which can manifest as over-activity. This might include gathering supplies, seeking information, or contacting loved ones.

In contrast, the Impact Phase follows the disaster and typically features disorientation and confusion rather than over-activity, as individuals are coping with the immediate consequences. The Recovery Phase involves longer-term efforts to restore normalcy after the disaster has concluded, while the Resolution Phase deals with the aftermath and analysis of the event. Understanding the dynamics of these phases is crucial for effective disaster management and response planning.