Which of the following statements best describes Newton's First Law of Motion?

Newton’s First Law says that an object will keep doing what it’s already doing—staying still or moving in a straight line at a steady speed—unless something outside pushes or pulls on it. The law shows that motion does not change by itself; it needs a force to change speed or direction. Because of this, a ball sitting on a table stays at rest until a hand nudges it, and a spaceship traveling in space keeps going unless a thruster or gravity changes its course. The key idea is that motion is inertial and only forces can alter it, which is why astronauts feel weightless in orbit. In short, the law tells us that without a net force, motion is constant.