Final answer:
To yield to emergency vehicles, you should pull over to the right side of the road and stop.
Step-by-step explanation:
In order to yield to emergency vehicles, the correct action to take is option 1) Pull over to the right side of the road and stop. When you hear or see an emergency vehicle approaching with its lights and sirens on, it is important to move out of its way as quickly and safely as possible. By pulling over to the right side of the road and stopping, you allow the emergency vehicle to pass by without any hindrance.