What was the impact of Russia dropping out of the war due to the Russian Revolution?

In some parts of Russia no one was in control and enormous suffering and loss of life among the civilian population resulted. It was not until 1920 that most of the fighting finally ended and Lenin and his followers could focus on turning Russia into communist state.

battle of survival between farmers and the rabbits during the great depression

the answer is d because for c the actors can't love acting for the other's audience their not even in the same show, it can't be b either because the question is talking about the actors not the audience, and it can't be a because   it's not specific enough