How can the mechanical advantage of a lever be increased?
a.
by applying the force farther from the fulcrum
b.
by making the lever shorter
c.
by moving the fulcrum away from the load
d.
by applying a larger force

The answer is; A

The force or weight and distance on both sides of the fulcrum is given by the following ratio;

MA = Fb/Fa = a/b (MA = Mechanical Advantage)

The greater the distance from the fulcrum on which force is applied to lift a load on the other side of the fulcrum,  the less the effort required.

answer; natural resources;

particle   p is an electron and particle q is a neutron