Which of the following describes what needs to occur to reduce force and to do the same amount of work?

Work is defined to be force multiplied by distance. If one component of the equation is decreased while aiming to keep the resulting value, then the other component must be increased. In that sense, to keep the same amount of work while reducing the force, the distance where the force is exerted should be increased.

//(b) both involve the use of levers;