Explanation: Urbanisation in Mumbai, like in many other large cities, is a complex process influenced by various factors. The primary factors that drive urbanisation in Mumbai are natural increase and rural to urban migration.
Natural increase refers to the growth of the urban population due to the difference between the number of births and deaths within the city. In Mumbai, as in many urban areas, the birth rate is often higher than the death rate, leading to a natural increase in the population. This factor is crucial because it contributes to the overall growth of the urban population without the need for external migration.
Rural to urban migration is another significant factor. People from rural areas move to Mumbai in search of better economic opportunities, employment, and improved quality of life. The city offers a range of job opportunities in various sectors such as manufacturing, services, and information technology. Additionally, Mumbai provides better access to healthcare, education, and other amenities that are often lacking in rural areas. This migration is driven by push factors in rural areas, such as limited job opportunities, poor infrastructure, and agricultural challenges, as well as pull factors in the city, such as better living conditions and economic prospects.
It is important to note that while push and pull factors play a role in migration, they are not the primary drivers of urbanisation in Mumbai. Push factors are conditions in rural areas that compel people to leave, such as poverty, lack of employment, and poor living conditions. Pull factors are the attractive conditions in urban areas that draw people in, such as better job opportunities, higher wages, and improved living standards. However, these factors are more about the reasons for migration rather than the direct cause of urbanisation.
Natural increase and rural to urban migration are the key factors that contribute to the growth of Mumbai's urban population. Understanding these factors is essential for comprehending the dynamics of urbanisation in the city and for planning and managing urban development effectively.
In summary, the correct answer is (D) Natural increase and rural to urban migration, as these factors directly contribute to the growth and development of Mumbai as an urban centre.