Which of the following was a reason for the growth of cities in the late 1800s

The options of the question are, A) Too many people were living in the rural or country areas. B) Factory jobs were plentiful and available in the cities. C) The federal government passed the Urban Act of 1870, which required people to move to the cities. D) The cities offered much more space for people.

The correct answer is B) Factory jobs were plentiful and available in the cities.

A reason for the growth of cities in the late 1800s was that factory jobs were plentiful and available in the cities.

The U.S. cities grew extensively from 1880 to 1900. The cities grew some 15 million people in twenty years. One of the reasons of this expansion was the growth of the industry. Immigration and rural people who were looking for better opportunities found jobs in the cities due to the opportunities that industries presented. Indeed, factory jobs were plentiful and available in the cities.  

the ansseer is going to be c i think