The answer is A. "El maletero."
El maletero means the trunk, which is where you can safely store things in a car. The other choices include different parts of a car, but none of which are suitable for storage.
Las puertas - the doors
Los asientos - the seats
Los espejos laterales - side mirrors
Las luces delanteras - front lights
Como Así de ANPChT estás seguro que está correcta
They are both in South America
