Question

Which of the following describes work

holding 1kg of mass
moving 1 m in 1hr
holding a 1kg mass for 1hr
lifting a 1kg mass 1 m

Answer 1

We know, Work done = force * displacement
So, in order to do a work, you need a force with displaced object.

Here, among all the options, objects are moving in 2 options, and only in last option, it does make sense, as it's product would be something finite value

In short, Your Answer would be Option D

Hope this helps!

Answer 2

work is equal to force × distance, so the one that contains those describe work.
lifting 1kg of mass 1m is describing an upwards force and a distance if 1m, so that's the best answer