Question

newtons first law of motion states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an unbalanced force.
inertia is the tendency of an object to resist a change in motion.
choose the correct answer
an object at rest will remain at rest until when?
the volume of the object is changed
an unbalanced force acts upon the object
the density of the object is changed

Explanation:

Newton's First Law of Motion states an object at rest stays at rest unless acted on by an unbalanced force. Volume, density changes don't affect this state.

Answer:

An unbalanced force acts upon the object