Once the body has begun shivering, what happens to make it stop shivering?

Question

When body temperature returns to normal, the respiratory system sends a message to the skeletal system to stop shivering.
When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering.
When body temperature is below normal, the nervous system sends a message to the skeletal system to stop shivering.
When body temperature is below normal, the respiratory system sends a message to the muscular system to stop shivering.

Answer 1

When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering.