In 1985-86, an official policy introduced by Gorbachev in Soviet Union that stressed on honest discussion about the country’s social issues and concerns was called

In May 1985, two months after coming to power, Mikhail Gorbachev delivered a speech in St. Petersburg (then known as Leningrad), in which he publicly criticized the inefficient economic system of the Soviet Union, making him the first Communist leader to do so.

This was followed by a February 1986 speech to the Communist Party Congress, in which he expanded upon the need for political and economic restructuring, or perestroika, and called for a new era of transparency and openness, or glasnost. Therefore, option A is the correct answer.