Which factors lengthen your braking distance?

Your answer is correct because all three factors increase the braking distance. Towing a trailer without brakes adds extra weight that the vehicle's brakes must stop, making it take longer to halt. A wet or slippery road reduces tire grip, so the vehicle takes more distance to come to a stop safely. Driving downhill means gravity adds to the vehicle's momentum, requiring more distance to brake effectively. Remember, these factors affect how quickly your vehicle can stop, so you should always adjust your speed and following distance accordingly.