Question: The average car uses about 25% of the available energy in each gallon of gasoline. The energy not used to run the car is released as heat and sound. Which statement best describes this occurrence?

  Options: 
 A. Energy conversion reduces efficiency.
 B. Energy is destroyed at high temperatures.
 C. Energy loss increases the order in a system.
 D. Energy levels increase as conversions take place.
Answer: A