What does a stop sign indicate a driver must do?

Answer: B — Stop completely and yield to oncoming traffic

A stop sign indicates that a driver must come to a complete stop at the intersection where the sign is posted. This is crucial for ensuring safety at intersections, allowing the driver to assess the traffic situation and yield to other vehicles or pedestrians who may have the right of way. The requirement to stop fully, rather than merely slowing down or proceeding cautiously, ensures that drivers are fully aware of their surroundings and can make informed decisions about when it is safe to continue through the intersection. Yielding to oncoming traffic is important to prevent accidents and maintain a smooth flow of vehicles. Following this rule helps protect not only the driver but also other road users.