What is the purpose of a life raft on the aircraft?

The purpose of a life raft on an aircraft is primarily to equip slides/rafts with survival and signaling equipment. Life rafts are essential safety devices utilized during emergency scenarios, such as water landings. They are designed not only to provide flotation but also to assist occupants in surviving until rescue. This is accomplished through the inclusion of various survival items like water, food rations, medical supplies, signaling devices, and sometimes thermal blankets to maintain body heat.

This comprehensive functionality ensures that passengers and crew have access to critical resources that can significantly enhance their chances of survival in emergency situations while adrift at sea. The other options do not capture the full range of capabilities that a life raft is intended to provide, as they either oversimplify its role or neglect the vital inclusion of essential survival resources.