The paragraph preceding the whole reading passage...

Câu hỏi: The paragraph preceding the whole reading passage probably discusses _____.

A the urbanization in the United States in the nineteen century.

B the most important means of integrating immigrants into American society in the nineteen century. 

C the industrialization and the bureaucratization of economic life the United States in the nineteen century.

D the formal schooling in the United States in the nineteen century.