Fact 1: If two balanced forces act on an object in opposite directions then that object will remain stationary.

Fact 2: Gravity creates force and energy.

Given the two facts above, answer the question "What can cause an object to remain stationary?" with the following options: 
- travel
 - microscope
 - running
 - wind
 - sweating
 - cold air
 - gravity
 - motion


 

       gravity  