Final answer:
Acceleration is produced when a force acts on a mass, according to Newton's second law of motion.
Step-by-step explanation:
Acceleration is produced when a force acts on a mass. This concept is explained by Newton's second law of motion, which states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass.
For example, if you push a shopping cart with a small force, it will accelerate slowly. However, if you push the same cart with a greater force, it will accelerate more quickly. The mass of the cart determines the amount of force required to produce a certain acceleration.
Therefore, the answer to your question is b. Newton's 2nd Law.