What is perestroika?

a. restructuring of the planned centralized economy,
b. an early move toward a freer market the russian word for railroad improvement of the russian environment greater openness,
c. a policy in the 1980s that encouraged several republics to demand independence a policy of education improvement,
d. in the last days of the former soviet union

Perestroika under Soviet leader Mikhail Gorbachev´s rule was:

a. restructuring of the planned centralized economy,

Explanation:

It was an attempt to reform the socialist command economy in the 1980s, its lack of economic and entrepreneurial incentives, an attempt to stimulate innovation and overcome stagnation. It didn´t reach its goals and led to unrest in the Soviet Union.