If a resultant force acts on an object, what occurs?

When a resultant force acts on an object, it causes the object to accelerate, according to Newton's second law of motion. This acceleration implies that the object's speed is changing, which means that work is done on the object. Work is defined as the product of the force applied to an object and the distance over which that force is applied in the direction of the force.

If a resultant force is present, the object cannot remain stationary unless the force is balanced, which is not the case when there is a resultant force. The concept of work being done emphasizes that the energy is transferred to the object, providing it with kinetic energy and causing it to move.

Thus, when a resultant force acts on an object, it directly leads to the performance of work, making this the correct choice in the context of the question.