What was the main difference between the mensheviks and the bolsheviks?

a. the political and economic groups they belonged to
b. the bolsheviks representing the upper and middle classes
c. the mensheviks representing the upper and middle classes
d. their beliefs about the means for bringing about political change

Option D.

Explanation:

Beliefs about the means for bringing about political change, is the right answer.

Throughout the late phase of the 19th and the early phase of the 20th century, the Mensheviks and Bolsheviks were the divisions in the Russian Social-Democratic Workers’ Party. On the one hand, Alexander Kerenskii provided his leadership to the Mensheviks, on the other hand, the Bolsheviks were led by Lenin.

Though both the groups had in some similarities the main difference between can be observed in the beliefs about the means for bringing about political change.

well considering i can't see the graph, it's probably prices