Which of the following is not relevant to communism?

Private enterprise is not relevant to communism. Communism is a political and economic system based on the idea of collective ownership of property and the means of production. In a communist society, the government or the community as a whole owns and controls all property and resources, and the distribution of goods and services is based on the principle of "from each according to their ability, to each according to their needs." Democracy is not incompatible with communism, but in practice, communist regimes have often been characterized by authoritarianism and the suppression of political dissent. Violent revolution, class war, and Friedrich Engels are all closely associated with communism, as they reflect the Marxist theory of historical materialism and the struggle between the proletariat (working class) and the bourgeoisie (wealthy capitalist class) for control of the means of production. Private enterprise, however, is seen as a capitalist concept that is antithetical to the collective ownership and control that is central to communism.