What should you do when you see a school bus flashing amber lights on an undivided highway?

• Prepare to overtake the school bus.
• Get ready to stop.
  Explanation:

  "When a school bus is flashing amber lights on an undivided highway (one without a median), it signals that the bus is about to stop. You must slow down and be ready to stop, whether you are approaching the bus from the front or the rear."
• Speed up and change lanes.
• Slow down and change lanes.