The most accurate response to what happens when you use a lever to lift a box is:
You use force from the lever to lift the box.
This statement reflects the basic principle of how a lever works. A lever amplifies the input force applied at one end to produce a greater output force at the other end, which can be used to lift an object like a box.
While the other options mention aspects of energy transfer, they are either misleading or incorrect in the context of how a lever operates.