Question

____ forces cause objects to move or change direction. balanced active unbalanced operative

Explanation:

According to Newton's first - law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Unbalanced forces change the motion state of an object, causing it to move or change direction. Balanced forces result in no change in motion. Active, operative are not the correct terms in this context.

Answer:

C. Unbalanced