Answer:
D. It created political instability in the country that worsened existing
ethnic conflicts.
Step-by-step explanation:
When the Soviet Union Fell, some of the ethnic nations that were part of Yugoslavia felt that it was time to break up the Yugoslav nation. This is because while Yugoslavia was in name the union of several slavic nations, in reality the power balance was biased toward the Serbian nation.
Jose Braz "tito", the dictator of Yugoslavia for decades, was a Serb man himself.
Croats, Slovenes, Bosnians, and so on, took inspiration from the movements inside the Soviet Union to launch their own independence campaign. This resulted in ethnic nations taht ended up creating a civil war.