What was the Russian parliament called?

Correct answer: Duma

The governing concept is the limited constitutional reform introduced in Russia after the 1905 Revolution. Under pressure from strikes and unrest, Tsar Nicholas II issued the October Manifesto and allowed the creation of an elected representative assembly called the Duma. Therefore option C is correct. The Duma was not a fully democratic parliament in the modern sense because the Tsar retained important powers and repeatedly influenced or dissolved it, but it was Russia’s principal parliamentary body. Soviets were councils of workers, soldiers, or peasants; a commune is a different form of local or collective organization; and the Cheka was the early Soviet secret police. These distinctions make Duma the only suitable answer.