The statement "Any two forces which are equal and opposite form an action and reaction pair" is true. This statement is based on Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

Explanation:

1. Newton's Third Law of Motion:
- According to Newton's third law, when two objects interact with each other, they exert equal and opposite forces on each other.
- This means that for every force exerted by one object on another, there is a corresponding force exerted by the second object on the first object.

2. Action and Reaction Pairs:
- The equal and opposite forces mentioned in the statement form what is known as an action-reaction pair.
- An action-reaction pair consists of two forces that are equal in magnitude but opposite in direction.
- These forces act on different objects and are a result of the interaction between the objects.

3. Examples of Action and Reaction Pairs:
- When you push a wall, you exert a force on the wall, and the wall exerts an equal and opposite force on you. This is an action-reaction pair.
- When you kick a football, you exert a force on the ball, and the ball exerts an equal and opposite force on your foot. This is another example of an action-reaction pair.

4. Importance of Action and Reaction Pairs:
- Action and reaction pairs are essential in understanding the mechanics of motion.
- These pairs ensure that forces are balanced in a system, allowing objects to move or stay at rest.
- Without action and reaction pairs, there would be an imbalance of forces, leading to unpredictable motion.

Conclusion:
The statement that any two forces which are equal and opposite form an action and reaction pair is true. This statement is based on Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. Action and reaction pairs are fundamental in understanding the mechanics of motion and are crucial in maintaining balanced forces in a system.