please help history multiple choice?

Question

Lenin believed that a socialist revolution could succeed in Russia if

a revolutions were carried out at the same time in other parts of Europe.
b Russia became an industrial state.
c the peasants owned the land they worked.
d a small group of dedicated revolutionaries controlled the government.

here is an excerpt from my book, I just can't figure it out.

In western Europe, many leading socialists had come to think that socialism could be achieved through gradual and moderate reforms such as higher wages, increased suffrage ,and social welfare programs. Te Bolsheviks rejected this approach. To Lenin, reforms of this nature were merely capitalist tricks to repress the masses. Only revolution, he said, could bring about needed changes.

Answer 1

It is "D".

Answer 2

A

Answer 3

try these websites

Answer 4

a!