You are presented with the question "What does operating an automobile usually require?" and the following answer choices: 
- bus
 - bicycle
 - Animal remains
 - hydrogen and oxygen
 - energy usage
 - ramp
 - Time and energy
 - solid, liquid, gas

Now knowing that operating an automobile usually requires fossil fuels and fossil Fuels Fuels that are formed in the earth from plant or animal remains, choose the best answer.


 

   Animal remains      