What is Newton's Second Law of Motion?

LAG
Every reaction is equal to the force applied
The smaller the mass of an object, the greater the acceleration of that object when a force is applied. The greater the force applied, the greater the acceleration.
Forces are balanced when they are equal and opposite
An object at rest or in motion will remain at rest or in motion unless acted upon by an unbalanced force

The correct answer is:

The smaller the mass of an object, the greater the acceleration of that object when a force is applied. The greater the force applied, the greater the acceleration.