The law that gives a qualitative definition of force is 

The first law of Newton, also known as the rule of inertia, provides a qualitative definition of force. Because objects must be propelled by force in order for them to move. Since it is qualitative, force is defined in this way.
The second law of Newton: 
According to this, a body's rate of change in momentum is directly proportional to the amount of applied force and moves in the direction of the force.
According to Newton's third law, every action has a corresponding and opposing response.

Unless driven to do otherwise by an outside force, every body remains in its condition of rest or uniform motion along a straight line. Zero acceleration is implied by either uniform linear motion or the state of rest. Using the first law of motion, Consequently, it simply reads as "A body experiences zero acceleration if its net external force is zero.

LAW of INERTIA is the correct response.

The ideal choice is (B)