What signifies the change in population density from rural to urban settings?

Urbanization is the process that signifies the change in population density from rural to urban settings. It refers to the increasing number of people living in urban areas as cities and towns expand and attract a larger population. This transition is often motivated by various factors, including the search for better employment opportunities, access to services, and improved living standards, which are typically found in urban environments compared to rural ones.

While industrialization contributes to urbanization by creating jobs and economic activities that often require a concentrated workforce, it is urbanization itself that directly describes the demographic shift. Secularization pertains more to shifts in religious beliefs and practices rather than population density changes, and globalization relates to the interconnectedness of economies and cultures around the world, which can influence urbanization but does not specifically define the movement of populations from rural to urban areas. Therefore, identifying urbanization as the correct answer highlights an understanding of demographic changes related specifically to population density.