You are presented with the question "pushing on the pedals of a bike cause what?" and the following answer choices: 
- pedals
 - get started
 - stillness
 - Pollution
 - Decrease bodily water
 - lack of motion
 - kinetic friction
 - electromagnetic energy

Now knowing that pushing on the pedals of a bike cause that bike to move and kinetic friction is the resistance on a moving object, choose the best answer.


 

       kinetic friction  