Who led the communist revolution in october 1917 which take russia out of the war?

The October Revolution refers to the seizing of power in Russia by the Bolsheviks led by Vladimir Ilyich Lenin and Leon Trotsky. The Bolsheviks overthrew the Russian Provisional Government led by Alexander Kerensky.Explanation:

"harry t. moore (1905-1951) – civil rights activist, leader, and the first martyr of the civil rights movement. fannie lou hamer (1917–1977) – leader in the american civil rights movement; co-founder of the national women's political caucus and freedom democratic party. james farmer (1920–1999) – congress of racial equality."

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."