Which of the 1st class levers below has the load that will be easiest to lift?

In a first-class lever, the load, effort, and fulcrum are arranged in such a way that the fulcrum is positioned between the load and the effort. The effectiveness of lifting the load in a lever depends on the distances from the fulcrum to the load and the effort.

Choosing Lever B suggests that this particular lever configuration allows for the greatest mechanical advantage. Mechanical advantage is enhanced when the effort is applied further from the fulcrum than the load is, meaning that less force is required to lift the load. In this case, Lever B must provide an optimal ratio of these distances, resulting in the load being the easiest to lift.

The configuration of Lever B likely features a shorter distance from the load to the fulcrum compared to the distance from the effort to the fulcrum, enabling a larger lifting force for a smaller applied force. This principle is critical in understanding how levers function in terms of balance and force multiplication. Thus, Lever B is the best choice for the easiest lifting scenario among the options given.