If a driver is in the passing lane of the autobahn, what should they do when they see a vehicle approaching from behind with flashing lights?

Answer: C — Slow down

When a driver in the passing lane of the autobahn sees a vehicle approaching from behind with flashing lights, the appropriate action is to change lanes immediately to allow the emergency vehicle to pass. The correct answer is to change lanes and do so safely and without hesitation. In Germany, the emergency vehicle's flashing lights indicate that it requires priority to get through traffic quickly. Drivers should be aware that hindering the progress of emergency vehicles can lead to serious consequences, including fines or penalties. Considering the other options, speeding up to avoid pulling over is dangerous because it could impede the emergency vehicle's ability to pass and create a hazardous situation. Staying in the lane is not a viable option when an emergency vehicle is approaching, as this obstructs its passage. Slowing down may not provide the necessary space for the emergency vehicle to maneuver effectively and can further complicate the traffic situation. Therefore, the correct action in this situation is to safely change lanes to facilitate the emergency vehicle's passage.