If a traffic signal turns yellow as you approach, what should you do?

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

When a traffic signal turns yellow, it serves as a warning that the light is about to change to red, indicating that drivers should prepare to stop. The appropriate response is to stop if it is safe to do so, which allows you to maintain compliance with traffic regulations and enhances safety for yourself and other road users. Stopping when the light turns yellow is crucial, as running a red light can lead to serious accidents, fines, and may cause harm to pedestrians and other vehicles. This practice enhances overall traffic flow, prevents collisions, and promotes a safer road environment. The importance of assessing the situation before stopping cannot be overlooked; one must ensure that stopping doesn’t create a hazard for following vehicles. However, when it's safe to stop, that is the correct choice to make.