Newton's laws help to explain the relationship between:

Newton's laws provide a foundational understanding of how force, mass, and motion are interconnected. The first law, often referred to as the law of inertia, states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by an external force. This illustrates how motion is directly influenced by external forces.

The second law introduces the relationship between force and mass, establishing that force equals mass times acceleration (F=ma). This equation quantitively describes how the mass of an object affects its motion when a net force is applied. It highlights that greater mass requires more force to achieve the same acceleration, thereby clarifying the dynamics of motion in various scenarios.

The third law states that for every action, there is an equal and opposite reaction. This principle underscores the interactions between forces exerted by objects, indicating that forces always come in pairs and emphasizing the importance of understanding both the mass of objects involved and their resulting motion.

In summary, the correct choice effectively encapsulates the essence of Newton's laws, which are fundamentally centered on the relationships between force, mass, and the resultant motion of objects.