Answer: C

“Two inevitables” and “two nevers” are the core ideas of scientific socialism theory. People generally summarize the famous saying of Marx and Engels in "The Communist Manifesto" that "the destruction of the bourgeoisie and the victory of the proletariat are equally inevitable" as "two inevitabilities", that is, the inevitable destruction of capitalism and the inevitable destruction of society. Doctrine will surely win. "Two Nevers" is an important idea put forward by Marx in the "Preface to the Critique of Political Economy" in January 1859. He pointed out: In human history, “No matter which social form, it will never perish before all the productive forces it can accommodate are developed; and new and higher production relations will not perish until its material existence conditions are met. It will never appear before it matures in the womb of the old society." "Two Nevers" is of great significance in the history of the development of Marxism. Therefore, the correct answer is C.