Where are the emergency lights typically located outside the aircraft?

Emergency lights are strategically placed in specific locations outside the aircraft to ensure visibility and safety during an emergency situation. The correct choice highlights that such lights are found in the exit rows, passenger doors, and service doors. These locations are critical as they provide direct guidance to passengers and crew on where to safely exit the aircraft if evacuating is necessary, particularly during low visibility or nighttime conditions.

The placement of emergency lights at these points is designed to enhance safety by marking these critical areas, making them easily identifiable. This placement ensures that passengers can proceed towards exits in a calm and organized manner, effectively aiding in the evacuation process.

Other options, while they may suggest locations that could be plausible, do not align with the specific safety standards and emergency protocols required for aircraft design and operation. For instance, emergency lights above the cockpit or near the engines may not provide the same benefit in guiding evacuation, while lights in the cargo area would be less effective for passenger awareness or emergency facilitation.