If you approach a vehicle with a reflective triangular orange sign on its rear, you must what?

Answer: C — Slow down and use caution

When you approach a vehicle displaying a reflective triangular orange sign on its rear, such as a slow-moving vehicle emblem, it indicates that the vehicle is traveling at a slower speed than the normal flow of traffic. In this situation, it is important to slow down and use caution. This sign serves as a warning for drivers to be prepared to adjust their speed accordingly and be aware of the slower-moving vehicle in front of them. It is crucial to avoid sudden maneuvers or tailgating these vehicles to maintain a safe distance and reduce the risk of accidents.