What must drivers do when approaching a stop sign?

Answer: B — Come to a complete stop at the marked line or crosswalk

When approaching a stop sign, drivers are required to come to a complete stop at the marked line or crosswalk. This requirement is crucial for ensuring safety at intersections, as it allows drivers to fully assess the situation before proceeding. By stopping completely, drivers can effectively observe any oncoming traffic, pedestrians, or other potential hazards, thus reducing the risk of accidents. Following this procedure helps maintain order and predictability on the road. Drivers must also be mindful that failing to stop can lead to serious consequences, such as traffic violations or accidents, emphasizing the importance of adhering to traffic control signs. The marked line or crosswalk is there to provide a clear guideline on where the stop should occur, enhancing safety for both drivers and pedestrians in the vicinity.