The territories of Yugoslavia and Sebia-Montenegro were once in a single state just before the Soviet Union collapsed during 1991. These states became independent from the disengangement and among the effects these newly-independent states suffer was the economic disaster.
The correct answer is: D. tragedy of the commons theory.
The tragedy of the commons theory explains situation in a system where resources are shared and suddenly the individual users start to act independently. Individual users (in this case world countries) start to act according to their own self-interest behave contrary to the common good of all other users (e.g. fishing companies) by depleting or spoiling that resource (fishes and other marine organisms) through their collective action.
There must be a membrane and cytoskeleton. Hope this helped!
The process of wearing or scraping away.