Which Soviet leader is responsible for glasnost, which called for openness and self-criticism in Soviet affairs?

a. Vladimir Osipov

b. Joseph Stalin

c. Mikhail Gorbachev

d. Nikita Khrushchev

Mikhail Gorbachev, a Soviet leader, is a responsible for glasnost, which called for openness and self-criticism in Soviet affairs. He introduced profound changes the economic practice, internal affairs and international relations. His actions set to collapse the Soviet Union which dissolve into fifteen republics.

The answer is letter C.