Why was the Congress of People's Deputies so revolutionary?

In 1988 the Soviet Congress of People’s Deputies was created, and a Congress of People’s Deputies was established in each republic. For the first time, elections to these bodies presented voters with a choice of candidates, including noncommunists, though the Communist Party continued to dominate the system. Under the new constitution the Federal Assembly became the country’s legislature. It consists of the Federation Council an upper house comprising appointed representatives from each of (Russia’s administrative divisions) and the State Duma (a 450-member popularly elected lower house). The president’s nominee for chairman of the government is subject to approval by the State Duma, if it rejects a nominee three times or passes a vote of no confidence twice in three months, the president may dissolve the State Duma and call for new elections. All legislation must first pass the State Duma before being considered by the Federation Council. A presidential veto of a bill can be overridden by the legislature with a two-thirds majority, or a bill may be altered to incorporate presidential reservations and pass with a majority vote. With a two-thirds majority (and approval by the Russian Constitutional Court), Hope This Helps

the answer is prolly b