Which of the following laws is also known as the law of inertia?

 Newton's first law of motion describes the law of inertia. 

The ability of a body to resist change is referred to as inertia.

Newton's first law of motion states that an object at rest will remain at rest and if it is in motion, it will continue to move at a constant velocity unless acted on by a net external force. This means that an object at rest will tend to stay at rest, while an object in motion will tend to stay in motion. This is also referred to as the law of inertia.