What is the required gear for the aft flight attendant on a 737-700?

The required gear for the aft flight attendant on a 737-700 specifically includes a crew life vest. This essential piece of equipment is crucial for safety in the event of a water landing or emergency situation where crew members might have to evacuate over water. The life vest ensures that flight attendants are prepared to assist passengers and themselves with safety equipment that can help prevent drowning if an incident occurs.

In the context of the other options, while emergency exit tools, a first aid kit, and a fire extinguisher are all important aspects of safety equipment on board an aircraft, they may not be specifically designated as the required gear for the aft flight attendant. Each position on the aircraft may have certain specified responsibilities with designated safety equipment, and in this case, the emphasis is on the necessity of a crew life vest for an aft flight attendant, particularly considering the risks associated with emergencies related to water landings.