Fact 1: Operating an automobile usually requires fossil fuels.

Fact 2: Fossil fuels are considered non-renewable.

Given the two facts above, answer the question "Which activity usually requires using a non-renewable resource?" with the following options: 
- 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


 

        Operating an automobile 