Answer: A) When the driver turned around to discipline some rowdy passengers, the bus weaved onto the shoulder of the road.
Step-by-step explanation: From the given options, the one that best combines the ideas in the group of given sentences, to make a single interested sentence, is the corresponding to option A: When the driver turned around to discipline some rowdy passengers, the bus weaved onto the shoulder of the road, because it uses correctly an independent clause and a subordinate clause to explain what happened in the correct order.