The correct answer is (b) 1971-81.
The percentage of urban population in India increased from 17.3% in 1971 to 23.3% in 1981, a growth rate of 34.7%. This was the highest decadal growth rate of urbanization in India.
The reasons for this high growth rate of urbanization during 1971-81 include:
- Rapid industrialization and economic growth, which led to the growth of urban employment opportunities.
- Increase in rural-urban migration, due to factors such as poverty, unemployment, and lack of development in rural areas.
- Expansion of urban infrastructure, such as roads, railways, and housing, which made it easier for people to live in urban areas.
The high growth rate of urbanization during 1971-81 had a number of positive and negative impacts.
Some of the positive impacts included:
- Increased economic growth and development, as urban areas are more productive than rural areas.
- Improved access to education, healthcare, and other social services.
- Increased social and cultural diversity.
Some of the negative impacts included:
- Increased pollution and environmental degradation.
- Overcrowding and slums.
- Traffic congestion and other infrastructure problems.
- Social unrest and crime.
The high growth rate of urbanization in India is expected to continue in the future. The government is taking a number of measures to address the challenges of urbanization, such as:
- Investing in urban infrastructure.
- Promoting sustainable development.
- Regulating urban growth.
- Providing social and economic opportunities for all citizens.