What is the first step upon approaching an intersection on the airfield?

Answer: C — Slow down and prepare to stop

Upon approaching an intersection on the airfield, the correct first step is to slow down and prepare to stop. This practice is crucial for several reasons. Airfield intersections can have various types of traffic, including aircraft, vehicles, and pedestrians. Slowing down allows you to assess the situation more effectively and ensure that it is safe to proceed. Being cautious gives you the time to look for any oncoming traffic or potential hazards in the intersection, which could include aircraft making turns, other vehicles, or workers on the ground. By preparing to stop, you enhance your situational awareness and demonstrate a commitment to safety, which is paramount in an airfield environment. The measures taken at intersections can prevent accidents and maintain the smooth operation of airfield activities.