What does a red and white eight-sided sign indicate?

Answer: B — Stop

A red and white eight-sided sign is universally recognized as a stop sign. This type of sign is designed to alert drivers that they must come to a complete stop at the intersection ahead, ensuring they yield the right of way to any vehicles or pedestrians that may be crossing. The eight-sided shape is distinct and easily identifiable, which contributes to its effectiveness in traffic regulation. In contrast, a yield sign is triangular and is colored yellow and red, indicating that a driver should slow down and yield to oncoming traffic if necessary. Cautionary signs typically carry a diamond shape and use yellow to indicate potential hazards or changes in road conditions. Lastly, a do not enter sign is square-shaped and often has a red circle with a white horizontal bar, specifically indicating that entry is prohibited in that direction. The clear shape and color of the eight-sided sign make it critical for safe driving practices at intersections.