The formula \( F = ma \) from Newton's second law of motion means that the force \( (F) \) applied to an object is equal to the mass \( (m) \) of that object multiplied by its acceleration \( (a) \). This indicates that:
- The heavier the mass, the more force is needed to accelerate it at a given rate.
So, the correct interpretation from the options given is:
The heavier the mass, the more force is needed to move it.