You are presented with the question "What must be overcome when pushing on bike pedals?" and the following answer choices: 
- hormones
 - Pollution
 - heat
 - activity
 - animation
 - inertia
 - friction
 - energy

Now knowing that pushing on the pedals of a bike cause that bike to move and first, overcoming inertia to move forward is difficult, choose the best answer.


 

      inertia   