Case A: The forces that are on the left and right are balanced, but the forces that are in the top and bottom aren’t so it would ultimately have a force of 4N. Which also means that the object is in motion.
Case B: All of the forces that have been applied on this object are in balance because they all cancel each other out. In conclusion it means that the object is not moving.
Case C: The forces that have been applied to this object are unbalanced. Therefore the object will move to the right because it has a force of 2N
