What must you do upon seeing a 'Stop' sign?

Answer: A — Come to a complete stop and check for traffic before proceeding

When you see a 'Stop' sign, the law requires that you come to a complete stop at the designated line, crosswalk, or intersection before proceeding. This ensures that you have the opportunity to check for oncoming traffic or pedestrians. It is crucial for safety, as failing to stop could lead to collisions or accidents, particularly at intersections where visibility may be limited or where there is conflicting traffic. The purpose of a 'Stop' sign is to control traffic and reduce the risk of accidents. Therefore, it is essential to fully obey this command by stopping completely, allowing you to assess the situation around you. After stopping and ensuring it is safe to do so, you can then proceed when the way is clear, maintaining safety as your top priority.