According to Newton's 1st Law, an object will...

Newton's 1st Law states that an object will remain at rest or continue to move in a straight line at a constant speed unless acted upon by an unbalanced force. This principle highlights the natural tendency of objects to resist changes in their state of motion. An object at rest will not start moving unless a force is applied to it, while an object in motion will not change its speed or direction unless a net external force acts upon it.

This law is foundational in understanding concepts of inertia and is crucial in analyzing motion and forces. It helps explain why seatbelts are important in a car; when a car suddenly stops, passengers continue moving forward due to their inertia unless restrained by the seatbelt.

The other options do not accurately represent Newton’s 1st Law. They suggest changes in motion that do not align with the core principle of the law itself, which emphasizes the absence of an unbalanced force as the reason for an object's continuous state of motion or rest.