What condition made it possible for alexander dubcek to take power in czechoslovakia again?

a. dubcek could not return to czechoslovakia and could rule only from moscow.
b. soviet leaders would give up their positions in the czech government.
c. soviet troops would no longer be stationed in czechoslovakia.
d. czech leaders would restrict their political and cultural involvement.

Alexander Dubcek was a Czechoslovakian politician who initiated the "Prague Spring" in the 60`s. he promised a new system known as "Socialism with human face". Dubcek and other leaders of this movement were arrested. He returned in the beginning of the 90`s to help the peaceful overthrown of the communism in Czechoslovakia and he was made a president once more. Soviet army left Czechoslovakia in 1991.

C. Soviet troops would no longer be stationed in Czechoslovakia.