Final answer:
The correct answer is B) Bourgeoisie and proletariat; eliminate private property, as Karl Marx's philosophy of Marxism posited that class struggles between these groups would be resolved by abolishing private property.
Step-by-step explanation:
Karl Marx discussed the struggles inherent to capitalism, focusing on the conflicts between two primary social classes, the bourgeoisie and the proletariat. Marx argued that historical changes and revolutions arose from class struggles, with the bourgeoisie, who owned the means of production exploiting the proletariat, who were the labor force. According to Marx, the solution to these struggles was to do away with private property, leading to the end of class conflict and the establishment of a socialist society.
The correct answer to the student's question is: B) Bourgeoisie and proletariat; eliminate private property.