Which is not true of lipids
a. they supply cells with nitrogen.
b. they carry fat-soluble vitamins to cells
c. they form structural parts of cell membranes

i think it would be c

hope this : )

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.