Which describes a group of organs that work together to perform a common function?

An organ system fits that description. It's a group of organs working together to perform a common function in your body.

and is made up of distinct tissues.

Hope this helps.

wheres the answers ?

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.