The first question a is rather confusing. But A only mentioned the class revolution, but did not explicitly put forward communism. As for c, it explicitly mentions communism. This document is called the communist party Declaration. Sure c

The second question, the history question must be taken to the history test center. The feudal society in the vast rural areas was actually based on the patriarchal clan system. The word clan appears in the title. The other three have similar meanings. Correct nonsense. Can't be linked to history. Sure c