In what scenario is smoking permitted on an aerodrome apron?

The correct scenario in which smoking is permitted on an aerodrome apron is in designated smoking areas. These areas are specifically established to ensure safety and manage the risk of fire hazards that could be exacerbated by smoking near aircraft, fuel, and other flammable materials commonly found in aerodrome environments.

Designated smoking areas are typically located away from operational zones, helping to minimize the potential for fire incidents. In contrast, smoking inside buildings or shelters is usually heavily regulated or prohibited due to the increased risk of fires and the safety of all personnel and passengers. Thus, the establishment of designated smoking areas allows for a controlled environment where smoking can occur without elevating risks associated with adjacent operations.

Options regarding smoking in vehicles or in areas where there is a heightened fire risk are not valid since they either present safety concerns or do not align with standard aerodrome regulations concerning smoking.