The correct answer is - C. Yugoslavia has been divided into seven countries with their own political power.
Yugoslavia has been a very powerful and influential country, and it was a country composed of seven federations. The federations that formed Yugoslavia were Serbia, Croatia, Bosnia and Herzegovina, Macedonia, Slovenia, and Montenegro, plus the region of Kosovo.
All of the six countries became independent countries in the early 1990's, and they have their own political power/ Kosovo was initially part of Serbia, bu the region proclaimed independence in the 2000's, so it became the seventh country that derived from Yugoslavia.