Which statement would be MOST important to include in a summary of the section "Karl Marx"? Marx theorized that capitalists would try to get more work from people for less pay. Marxism is more durable as a critique of capitalism than as a system for governing. Marx's idea about communism influenced the Russian Revolution in 1917. Marx thought that machines would make life dull and repetitive.

He was a German philosopher who developed the foundations of communism, a system that criticized capitalism and its doctrines. His most prominent theories are about the transition to communism, the class struggle, the Marxist theory of ideology and surplus value.

Therefore, the correct option for the question refers to surplus value, which was defined for Karl Marx as the difference between the value of the work produced by employees and their salary paid. For him, the surplus value is the work produced and not paid, being a condition of exploration of the capitalist system.

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