The correct answer is A) 1989.
After World War II, the Soviet Union dominated Eastern Europe. Beginning in 1989 many of the countries established independent governments.
Yes, it is true that after World War II, the Soviet Union controlled many European nations under Communism. Joseph Stalin exerted great influence in East Germany, Poland. Rumania, Czechoslovakia, Albania, and Hungary. However, in 1989, and after the Perestroika and glasnost policy led by USRR leader Mikail Gorbachev, the Soviet Union disappear and this allowed the creation of independent governments in the above-mentioned countries once controlled by the USSR.