The Soviet economy was characterized by a centrally planned system, also known as a command economy. Under this model, the state owned the means of production, and central planners determined production quotas, prices, and distribution. Consequently, individual economic freedom—such as the right to private enterprise, free market competition, or consumer choice—was severely restricted or non-existent, making option A the incorrect description of the system.

Marxism views the state as an instrument of class oppression, not an 'ethical idea.' The concept of the state as an ethical entity is central to Hegelian philosophy, which Marx critiqued. Marxism focuses on dialectical materialism, historical materialism, and the economic exploitation inherent in capitalism, specifically through the theory of surplus value, which explains how the ruling class extracts profit from the labor of the proletariat.

Marx famously described the Paris Commune of 1871 as the 'political form at last discovered' under which to work out the economic emancipation of labor. He viewed this short-lived revolutionary government as a model for the dictatorship of the proletariat, where the state apparatus was dismantled and replaced by direct democratic control by the working class, thereby serving as a practical realization of his theories on social emancipation.

Marxist theory focuses on the struggle between the proletariat and the bourgeoisie. While 'classless society' and the 'withering away of the state' are core tenets of the ultimate communist goal, the term 'possessing class' is a descriptive sociological category rather than a theoretical component of the Marxist vision for the future. Marxists aim to abolish the power of the possessing class, not integrate it into their theoretical framework.

Karl Marx wrote 'Wage Labour and Capital' in 1847, based on a series of lectures he delivered to the German Workers' Club in Brussels. The text provides an early analysis of his economic theories, specifically focusing on the relationship between labor, capital, and the exploitation inherent in the capitalist mode of production.

Marx envisioned that the transition to communism would eventually eliminate the alienation caused by the division of labor. In the advanced stages of socialist development, the distinction between mental and manual labor would be abolished, as individuals would be free to engage in diverse activities. This integration aims to prevent the intellectual stagnation of workers and the elitism of the managerial class, fostering a truly egalitarian society.

Marxist theory advocates for the abolition of private property and the collective or state ownership of the means of production. This is intended to eliminate class exploitation and ensure that resources are distributed according to need rather than profit, forming the foundation of a socialist and eventually communist society.

Marx famously described religion as the 'opium of the people' in his critique of Hegel's Philosophy of Right. He argued that religion functions as a form of social anesthesia, providing temporary relief from the suffering caused by material conditions and alienation, while simultaneously discouraging the proletariat from seeking revolutionary change to improve their actual lives.

Karl Marx is the chief proponent of scientific socialism. Unlike the 'utopian' socialists who relied on moral persuasion, Marx sought to ground his socialist theory in a rigorous analysis of historical development, economic structures, and class dynamics. His work, particularly 'Das Kapital', provided the theoretical foundation for what he termed scientific socialism, emphasizing the inevitable transition from capitalism to communism.

Karl Marx adapted the Hegelian dialectic—which focused on the evolution of ideas through contradiction—and applied it to material conditions. Marx famously stated he turned Hegel's dialectic 'right side up,' shifting the focus from the development of the 'Absolute Spirit' to the development of material, economic, and social forces in history.