Answer:
A. decreasing the applied force and increasing the distance
Explanation:
As we know that machine is used to decrease the efforts so that we will get more output work by applying less amount of force.
As we know that the efficiency is defined as
[tex]\eta = \frac{W_{out}}{U_{in}}[/tex]
so here if we give less energy and get more output then it means efficiency is good and that will act as a machine for us.
here if output work is more then it means that the distance moved will be more while the applied force is small so that input energy or efforts is small
so correct answer will be
A. decreasing the applied force and increasing the distance
