Whether the purchase option over the immovable property was validly constituted despite lack of communal-council authorization.
The option was not validly constituted because the municipal representatives exceeded their internal powers; the company could see from the annexed council excerpt that the authorization covered only the superficies, not the option.
For a contract concluded by representation, the representatives must act in the name of the principal and within granted powers. Under cantonal law, the option required council competence; the 2000 council decision authorized only superficies. Because the notarial deed itself referred to that limited authorization, the company could not rely on a broader internal mandate. No ratification occurred.