What is the primary purpose of a Stop sign?

Answer: C — To require drivers to come to a complete stop

The primary purpose of a Stop sign is to require drivers to come to a complete stop. This traffic control device is critical for ensuring safety at intersections where visibility may be limited or where there may be cross traffic. When a vehicle approaches a Stop sign, the driver must halt the vehicle fully before proceeding. This complete stop allows the driver to assess the intersection for any oncoming vehicles, pedestrians, or other potential hazards. The implementation of Stop signs helps control the flow of traffic and reduces the likelihood of accidents. By mandating that drivers stop and take note of their surroundings, the Stop sign plays a vital role in maintaining order on the road and promoting safe driving practices. It is essential for reinforcing traffic laws and ensuring that all road users can navigate intersections safely.