Respuesta :
A more efficient agricultural production is a cause of urbanization (option b).
- Urbanization can be defined as the process through which populations shift from rural to urban areas, thereby leading to a higher proportion of people that live in the city.
- When urbanization is not sustainable, it may exacerbate environmental problems that affect the quality of life of urban populations (e.g, poor air/water quality, waste disposal problems, water availability, etc).
- The principal causes of urbanization include:
         1. Industrial and manufacturing growth
        2. More efficient agricultural systems/practices that reduce the employment in rural areas
        3. Economic, political and social factors that lead to the migration of people to industrialized/urbanized areas
        4. Modernization in the infrastructure of urbanized areas.
In conclusion, option b. agricultural production became more efficient, is one common cause of urbanization.
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