a. The same The law of equal force and reaction (Newton's 3rd law) guarantees that both objects experience the same equal and opposite force.
b. The same The same impulse is applied (in opposite directions) to each object.
c, The golf ball The impulse creates a change in velocity (and hence of momentum) of the golf ball which was originally at rest.
d. The golf ball Equal and opposite forces were created between the two objects. The golf ball has lower mass. It will, therefore, experience greater acceleration .