Question: Brittany pedaled her bicycle quickly on a level surface. When she stopped pedaling and coasted, the bicycle slowed and came to a stop. What happened to the energy of the moving bicycle as it coasted to a stop?

  Options: 
 A. It was transferred to heat due to friction.
 B. It was reabsorbed into Brittany's muscles.
 C. It was stored in the bicycle wheels as potential energy.
 D. It was transferred to the air in the form of visible light.
Answer: A