Which of the following situations discusses work in the scientific

sense?

A. A body moves at constant velocity.

B. An object is held three feet above the ground.

C. An object is lifted three feet.

D. A table holds up a 25 pound weight.

I would say A depending on its end location because it you are walking at a constant velocity and conclude the walk exactly where you began, you have used energy, but no work has been done.

Not C because the object begins at ground level and is then lifted above 3 feet, which has a displacement of 3 feet in the y-direction (vertical) but no distance has been traveled.