Which persons may you refuse to transport?

You answered correctly. According to German traffic rules, a driver may refuse to transport persons who would endanger the safety and order of operation of the vehicle or the safety of other passengers. This ensures that all passengers can travel safely and without disruption. However, simply being accompanied by a dog is not a valid reason to refuse transport, as long as the dog does not pose any actual danger or disturbance. Understanding this helps you maintain safe and orderly conditions inside the vehicle.