You are presented with the question "Which activity usually requires using a non-renewable resource?" and the following answer choices: 
- decaying trees
 - fissures of hot, acidic water
 - Cutting down a tree
 - burning coal
 - deforestation
 - Drying clothes in the sun
 - Powering a wind turbine
 - Operating an automobile

Now knowing that operating an automobile usually requires fossil fuels and fossil fuels are considered non-renewable, choose the best answer.


 

        Operating an automobile 