To achieve a greater acceleration, the bowler should throw the ball with more force. According to Newton's second law of motion, acceleration is directly proportional to the force applied and inversely proportional to the mass of the object (F = ma). Thus, to increase acceleration while keeping the same mass, applying more force to the ball is the right approach.
Given the options, the best choice is:
The bowler should choose a ball with less mass or throw the ball with more force.
Choosing a ball with less mass will also lead to greater acceleration, but applying more force is the direct and more controllable method to achieve that goal.