Correct Answer: Newton's laws of motion

Solution : The correct option is Newton's laws of motion.

Newton's Third Law of Motion explains thrust generation. For rockets, burning fuel accelerates gases downward, propelling the rocket upward. In jet engines, air is drawn in, compressed, mixed with fuel, and ignited, producing a backward expulsion of gases, propelling the jet forward. Similarly, deflating balloons push air backwards, causing forward motion, adhering to Newton's law of action and reaction.