Action and reaction discussed in the Newton’s third law can never be on the same body

That's correct. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. This law implies that any force exerted on a body will create a force of equal magnitude but in the opposite direction on the object that exerted the first force.

Here's a step-by-step explanation:

1. Consider two bodies A and B. If body A exerts a force on body B, then body B will also exert an equal and opposite force on body A.

2. This means that the action and reaction forces are acting on different bodies, not the same body.

3. If the action and reaction acted on the same body, they would cancel each other out, and there would be no motion. But we know that bodies do move when a force is applied, which confirms that the action and reaction forces act on different bodies.

4. Therefore, the statement "Action and reaction discussed in the Newton’s third law can never be on the same body" is correct.