How does Melting Pot relate to industrialization and immigration in the U. S. from 1870-1940

Immigrants were generally more willing to accept lower wages and inferior working conditions than native born workers (Zolberg 2006: 69). Great efficiencies in production led to higher profits that could be reinvested in new technology, which led to even more production and eventually higher wages for workers.

Explanation:

i think the answer is   b.