What is performed when work is done on an object?

When work is done on an object, there is a transfer of energy. Work is defined in physics as the process of transferring energy to or from an object when a force is applied over a distance. This means that when a force moves an object, energy is transferred to that object, which can then affect its motion or position.

For example, when you push a box across the floor, you apply a force and move the box a certain distance. In doing so, you have transferred energy to the box, enabling it to move. This energy transfer can result in kinetic energy, potential energy, or a combination of both, depending on the context of the work being performed.

While other choices involve various physical concepts, they do not accurately describe the action taking place during work. The essence of work is intrinsically linked to energy transfer, making it the most appropriate answer in this context.