You are presented with the question "What powers most automobiles? " and the following answer choices: 
- Sunlight.
 - A finite resource.
 - Natural gas.
 - an engine
 - energy of moving objects
 - Water
 - a hydraulic system
 - transportation technology

Now knowing that operating an automobile usually requires fossil fuels and fossil fuels are a finite resource, choose the best answer.


 

  A finite resource.       