The statement that BEST describes why the refrigerator does not move is:
The person does not apply enough force to the refrigerator, so the forces are still balanced.
In this situation, if the refrigerator does not move despite the person applying as much force as possible, it indicates that the force applied is not sufficient to overcome the static frictional force acting against the refrigerator. As a result, the forces remain balanced, and the refrigerator stays in place.