The correct options are
A He granted freedom of expression to people.
D Poland demanded independence from USSR.
Mikhail Gorbachev gave more freedom of expression to people, meaning more freedom for the media. He launched many liberal reforms known as “Glasnost”. “Glasnost” means “openness”. The power of USSR’s institutions eroded under Gorbachev’s watch. Countries like Hungary, Czechoslovakia, and Poland which were part of the USSR demanded to become independent countries.