What should you do if you are driving in fog or get caught in foggy conditions?

• You should slow down and drive at a speed that suits the conditions.
• You should ensure that your vehicle's full lighting system is turned on.
• You should use low-beam headlights.
• All of the above.
  Explanation:

  "If you are caught driving in fog, follow these safe-driving tips: (1) Slow down gradually and drive at a speed that suits the conditions, (2) Make sure the full lighting system of your vehicle is turned on, (3) Use your low-beam headlights. High beams reflect off the moisture droplets in the fog, making it harder to see."