Which of the following should you do to ensure safe night driving?

• Make sure your headlights are working properly and the lenses are clean.
• Watch carefully for highway signs, pedestrians and vehicles stopped along the edge of the road.
• Keep your windshield clean.
• All of the above.
  Explanation:

  "To ensure safe driving at night, you must: 1. Ensure your headlights are working properly and the lenses are kept clean. 2. Keep your windshield clean. 3. Watch carefully for highway signs, pedestrians, and vehicles stopped along the edge of the road."