What was one consequence of the october revolution?

a. vladimir lenin was exiled for his opposition to the government.
b. russian citizens began to protest food and coal shortages.
c. karl marx created principles to establish classless societies.
d. the bolsheviks ended russia’s involvement in world war i.

The answer is: D.The Bolsheviks ended Russia’s involvement in World War I.

In the october revolution, Bolshevik Party that led by Vladimir Lenin led a coup d'etat  against the current Russian Government.

The party later on convince a lot of people to ended the Russian involvement in world war I due to the economic depression that it caused for Russian people, and eventually the Russian government fall to the pressure and retract itself from world war I.