If you encounter a motorist making a left turn in front of you, what should you do?

Answer: B — Slow down and be prepared to stop

When encountering a motorist making a left turn in front of you, it is crucial to slow down and be prepared to stop. This approach is correct because it prioritizes your safety and allows you to assess the situation more thoroughly. By slowing down, you give yourself more time to react to the actions of the turning vehicle, which may not have seen you or may miscalculate the timing of their turn. Adjusting your speed gives you the opportunity to navigate the situation without taking unnecessary risks. This is particularly important because a turning vehicle can change direction unexpectedly, and being prepared to stop can prevent a collision. Other choices, such as speeding up to pass the vehicle, could lead to dangerous outcomes if the turning driver doesn't yield as expected. Maintaining speed and honking signifies your presence but does not alter the fact that you may still need to stop, and it doesn't prevent a potential accident. Changing lanes could also be a risky move, especially if there are other vehicles or obstacles in adjacent lanes. Therefore, the most responsible action is to slow down and remain ready to stop, ensuring that you can safely navigate the intersection.