When you see a yellow light, you should:

Answer: B — Stop if you can do so safely

When you see a yellow light while driving, the most appropriate action is to stop if you can do so safely. This means that if you have enough time and space to come to a complete stop before entering the intersection, you should do so. Choosing to speed up, as option A suggests, can be dangerous as it may not give enough time to stop before reaching the intersection. Similarly, option D is incorrect as it's not safe or legal to make a left turn at a yellow light. Option C, while not necessarily incorrect, may not be the best choice as it may not allow enough time to come to a complete stop before reaching the intersection. The safest and most responsible option is to stop if it can be done safely.