What should you do on a highway with only one traffic lane in your direction when approaching an emergency vehicle?

• Maintain your speed and pass the emergency vehicle quickly.
• Speed up to clear the area.
• Slow down and drive at a reduced, safe speed until completely past the emergency vehicle.
  Explanation:

  "On a highway with only one traffic lane in the same direction you are traveling, you must slow your speed and drive at a reduced, safe speed until you completely pass the emergency vehicle."
• Stop and wait for the emergency vehicle to leave.