The correct response is:
Unlike Marxism, Marxism-Leninism includes a role for a small, elite group to help the people adapt to communism.
Marxism focuses on the idea of class struggle and the eventual rise of a classless society through the direct action of the proletariat, whereas Marxism-Leninism emphasizes the need for a vanguard party to lead the working class and guide the revolution toward establishing a socialist state.