What should you do if you're nearing a yellow traffic light?

Answer: B — Stop if it is safe to do so

When approaching a yellow traffic light, the appropriate response is to stop if it is safe to do so. A yellow light serves as a warning that the light is about to turn red, indicating that drivers should be prepared to stop unless they are too close to the intersection to do so safely. This action helps to ensure the safety of all road users, including pedestrians and other vehicles. Stopping when it's safe allows you to anticipate the upcoming change in traffic conditions and reduces the risk of accidents that can occur if drivers rush through intersections. A driver who speeds up might not have enough time to react if the light turns red unexpectedly, leading to potential violations and collisions. Ignoring the signal entirely creates additional dangers and can result in serious legal consequences. Making a U-turn is not relevant in this situation, as it does not address the immediate need to respond to the traffic light appropriately.