Final answer:
A search or evacuation group should be activated in a highrise fire when there is a serious fire or hazard and there is potential for extreme physical danger. The purpose of these groups is to search burning buildings to locate fire victims and rescue them, administer first aid if necessary, and report conditions to superiors.
Step-by-step explanation:
A search or evacuation group should be activated in a highrise fire when there is a serious fire or hazard and there is potential for extreme physical danger. The purpose of these groups is to search burning buildings to locate fire victims and rescue them, administer first aid if necessary, and report conditions to superiors. This is important because it ensures that people who are trapped or injured in a highrise fire are identified and rescued as quickly as possible to minimize harm.