Where is one of the locations of the PBE in the cabin?

The correct answer highlights the location of the Protective Breathing Equipment (PBE), which is typically stored in the Aft Left Partition of the aircraft cabin. This specific placement is strategic for quick access during an emergency situation where the use of PBE is necessary, especially in scenarios involving smoke or fire. The Aft Left Partition is a designated area that flight attendants can easily reach, ensuring that they can assist passengers promptly while safeguarding their own safety.

In contrast, the other options do not reflect the standardized protocols for the location of PBE. Storing the equipment in the overhead bin may not guarantee immediate access in an urgent situation, and placing it near the exit door could hinder swift retrieval if the exits are compromised. Storing PBE under the pilot's seat is not practical, as this location is primarily designated for cockpit equipment and would not allow cabin crew to access the PBE effectively during emergencies. Thus, the choice of the Aft Left Partition ensures both optimal accessibility and adherence to safety regulations.