You are presented with the question "what is a stationary object?" and the following answer choices: 
- moving
 - in the frog family
 - Under 32 degrees
 - dying
 - By coral exoskeletons
 - at equilibrium
 - solid, liquid, gas
 - h2o

Now knowing that if two balanced forces act on an object in opposite directions then that object will remain stationary and if an object is at equilibrium, then the forces are balanced, choose the best answer.


 

      at equilibrium   