Which demographic trend is characterized by younger populations moving to urban areas for better opportunities?

The correct answer is characterized by the movement of younger populations from rural areas to cities in search of improved economic prospects, better job opportunities, and enhanced living conditions. Urbanization refers to the increasing concentration of populations in urban settings as a result of various factors, including education, employment, and lifestyle changes. This phenomenon is particularly relevant in developing countries where cities often provide more resources and opportunities compared to rural areas.

The other choices refer to different concepts: Rural depopulation focuses specifically on the decline of inhabitants in rural areas, cultural assimilation deals with the process by which individuals or groups adopt the traits of another culture, and demographic transition refers to the shifts in birth and death rates as a country develops economically. Urbanization encapsulates the broader trend of younger demographics gravitating toward cities, which is a key aspect of modern societal development.