You are presented with the question "Friction can cause fires to break out in a home due to what?" and the following answer choices: 
- heating liquids
 - wind speed
 - temperature
 - centripetal force
 - wire placement
 - friction
 - cigarettes
 - heat energy

Now knowing that friction causes the temperature of an object to increase and when a fire breaks out in a home, the temperature in the room increases, choose the best answer.


 

   temperature      