What is the first action you should take when approaching a stop sign?

When approaching a stop sign, the first action you should take is to come to a complete stop. This is a fundamental traffic rule that prioritizes safety at intersections. Stopping completely allows you to look both ways and assess the situation for any oncoming traffic, cyclists, or pedestrians that may be present. It ensures that you have full control of your vehicle and can properly react to any hazards or changes in the environment before proceeding.

The other options suggest actions that do not align with safe driving practices at stop signs. Speeding up could increase the risk of an accident, especially if other vehicles or pedestrians are nearby. Looking for pedestrians is certainly important, but it should happen after you have come to a complete stop to ensure that you can clearly see and react to any pedestrians that may be crossing. Blowing your horn is typically unnecessary and could potentially startle others or draw attention away from the need to stop and assess the situation. Therefore, the correct answer emphasizes the critical first step of halting your vehicle to ensure safety for all road users.