To achieve greater acceleration, the bowler should throw the ball with more force. According to Newton's second law of motion (F = ma), the acceleration (a) of an object is directly proportional to the net force (F) acting on it and inversely proportional to its mass (m). Therefore, increasing the force applied to the ball will increase its acceleration, even if the mass of the ball remains constant.
So, the correct response is:
The bowler should choose a ball with less mass or throw the ball with more force.