1. Which of the following sentences best summarizes paragraph 12?
A. Before the rise of industrial America, most of America's population lived on small, rural farms.
B. The rise of big business, urbanization, and mass immigration contributed to America's shift from small agricultural communities to large urban centers.
OC. By 1920, more than one third of all Americans lived in cities because of the rise of industry and urbanization.
OD. Most Americans used to live on farms or in small towns, but then they became determined to move to cities and large urban areas.
