Answer:
A. There has been a move away from centrally planned and mixed economies and toward a more free market economic model.
Explanation:
In that period of time, the Soviet union was regarded as the biggest nation who adopted a centrally planned economic model. The country was so poor and a lot of dissatisfaction arise among the people due the centrally planned economic system. Eventually, members of soviet union started to seek their own independence, Leading to the fall of the soviet union in 1991.
The rest of the countries witnessed this Downfall and started to move away from centrally planned and mixed economies toward a free market model. They fear that if they adopted them, their country will fall into poverty just like the Soviet Union.