The correct answer is letter C
The ultimate goal of the Marxist-Leninist revolution is to achieve communism - "the last and greatest synthesis" - a society without a state and without classes. Without classes and, therefore, without the class struggle, communism would be the 'perfect society', where, without contradictions, historical materialism would not be applied.
According to this ideology, in order to reach the final goal, an earlier, transitory stage, a real stepping stone for "the final leap", the stage of socialism, must be reached.
the destruction of the bourgeois state, on whose ruins the proletariat will erect a state of its own, characterized by the "dictatorship of the proletariat" over the other classes.
This stage of Marxist-Leninist socialism, also called "scientific socialism", should not be confused with other types of socialism, called democratic and non-Leninist.