When is wor sai to done against the force of gravity?

See explanation below

Explanation:

Work is said to be done when the force applied to an object cause the object to move through a distance. For work to be done by a body, this means that the body that the force is applied to must move over a distance, if not work has not been done.

For example work has not been done in carrying a bowl of water while remaining on a spot. Once you leave that spot, then we can say that work has been done.

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.