What must you do when approaching a railroad crossing?

Answer: B — Slow down, look, and be prepared to stop

When approaching a railroad crossing, it's essential to slow down, look, and be prepared to stop. This practice ensures that you have adequate time to assess the situation and react appropriately. Railroad crossings can be unpredictable, as trains can come from either direction, often without much warning. By reducing your speed, you increase your ability to notice any approaching trains and safety signals such as flashing lights or lowered gates. It's important to recognize that even if there are no visible trains at the moment, the situation can change rapidly. This method prioritizes safety, allowing you to stop if necessary and avoid potential collisions with trains. Additionally, following this guideline aligns with traffic laws and promotes overall safety for both drivers and pedestrians at crossings.