What does Newton's third law of motion state?

Every object remains in a state of rest or uniform motion unless acted on by an external force.
For every action, there is an equal reaction in the opposite direction.
The acceleration of an object is directly proportional to the net force acting upon the object and inversely proportional to the mass of the object.
Energy cannot be created or destroyed, only converted from one form to another

The correct answer is: For every action, there is an equal reaction in the opposite direction.