Answer :
B. Perestroika
A, C and D are all different types of governments, not political reformation movements. Therefore they can't be the correct choice and Perestroika is the political reformation movement associated with Gorbochev.
A, C and D are all different types of governments, not political reformation movements. Therefore they can't be the correct choice and Perestroika is the political reformation movement associated with Gorbochev.