Which of the following traffic control devices would inform you to stop?

The stop sign is specifically designed to instruct drivers to come to a complete stop at an intersection or in situations where the sign is posted. It is a regulatory sign that communicates the legal requirement to halt, ensuring that vehicles yield the right-of-way to other traffic and pedestrians before proceeding. This clear directive is emphasized in traffic laws, making it a vital part of road safety.

Other signs, like the yield sign, indicate that drivers should slow down and prepare to stop if necessary, but they do not require a complete stop unless necessary for safety. Speed limit signs indicate the maximum permissible speed but do not instruct vehicles to stop. Parking signs provide information about where parking is allowed or prohibited but do not dictate stopping requirements. Thus, the stop sign stands out as the only device that mandates a complete and immediate halt of the vehicle.