You are partially correct. The correct answer is D) All of the above.
The law of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it. However, in the case of a ball in free fall, the force of gravity is acting on the ball, which is an external force.
Since the ball is not in a closed system because it is subject to the force of gravity, the momentum of the ball is not constant. Therefore, the law of conservation of momentum is not violated.