Answer - C - During the nineteenth and twentieth centuries, rural to urban migration was the most prominent worldwide.
Key Takeaway: Urbanization is the physical movement of people from rural to urban areas, with population growth equating to urban migration. It is generally projected that more than half of the Earth's population would live in urban areas by the end of 2010. People move into cities to seek economic opportunities. Living in cities permits individuals and families to take advantage of the opportunities of diversity in populations, access to the arts, and competition among business and educational institutions.