The Russian Term Perestroika Refers to A

The Russian term perestroika refers to a:

A) program of economic restructuring in the Soviet Union.
B) process of calculated,unilateral arms reductions by the Soviet Union and matched by the West.
C) cultural resurgence of music,painting,and architecture based on Russian folk motifs.
D) new process of diplomatic détente launched by Mikhail Gorbachev during the 1990s.
E) program encouraging greater political and cultural openness in the Soviet Union.