The correct answer is - D. creating a common, multicultural society.
One of the major goals of the European unification is to create one big multicultural society, thus eliminating the nationalism. This also means that all of the countries in the European Union have to be involved in that agenda, and that slowly, step by step, the national identities of the people from the countries in Europe to be put only as a historic trait, but all of them to become one big European nations, where all of them will identify as Europeans by nationality.
