Answer:
I believe you're asking about the Marxist criticism. Well, Marxist criticism came from various political ideologies and academic disciplines. These include general criticisms about the lack of internal consistency, criticisms related to historical materialism, the need to suppress individual rights, issues with the implementation of communism and economic issues such as distortion or the absence of price signals and reduced incentives. Also, empirical problems are often identified.
Explanation:
The main criticism of Marxism today claims that it has a simplistic character, be it in the organization of society into classes (capitalist and proletariat), or in the various interpretations that Marx makes of the direct interrelation between social factors of conscience (such as culture, religion and political) and those of the economy. According to some of these critics, economic reasons are also insufficient to explain modern phenomena such as man's search for status, even though it does not represent any economic advantage.
Answer would probably be B.)
Most of the new immigrants lived in the cities and had to compete for low-paying jobs, so it's D.) worked at challenging jobs in the cities