To find the net force applied to the object, you need to combine the forces acting on it. You have a force of 30 N to the right and an opposite force of 20 N to the left.
Net force = Force to the right - Force to the left
Net force = 30 N (right) - 20 N (left)
Net force = 10 N (right)
Therefore, the correct response is:
10 N to the right.