The Sun is to a planet as
A Earth is to the Moon
B
the tides are to the Sun
C
a moth is to a flame
D
the seasons are to the Moon
Por qué no da

the answer to this question is a

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.