Irredentism is a territorial claim by one sovereign state against another, aimed at equalizing the boundaries of its ‘nation’ (or ethnicity) with the borders of the state. It carries a nationalist and populist agenda to liberate “brothers and sisters suffering under a foreign dominance” and claims the recovery of ethnic frontier groups lying outside the territory of the nation-state. It is a version of revisionism whose aim of expanding its territory comes under the pretext of liberating and reuniting with long-lost relatives. The correct answer is D.