To maintain a safe following distance, you should use the "three-second rule." This rule applies to the space ______________ of your vehicle.

• Behind
• On the sides
• In your blind spot
• Ahead
  Explanation:

  "The "three-second rule" is a defensive driving technique used to maintain a safe following distance behind the vehicle ahead of you. It pertains to the space ahead of your vehicle, ensuring you have enough time to react to any unexpected changes in traffic conditions."