When movers use ramps to move heavy objects, which of the following are they doing in order to make work easier?

a. they are increasing the force needed.

b. they are increasing the amount of work done.

c. they are decreasing the amount of work done.

d. they are increasing the distance.

Option C, They are decreasing the amount of work done.

Explanation:

A ramp helps in reducing the amount of work done to move a heavy object easily.

By using an inclined plane, it becomes easier to move a heavy object with less force  to greater heights and hence the net work done also reduces.  

Work done is equal to  Displacement  x force  and hence when force reduces, the work done also reduces.

Option C is correct

mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. weight is the measure of the force of gravity on an objects's mass, while mass is the measure of how much matter there is in an object.