Demographic transition theory can be used to describe and predict the future population of any area. The theory tells us that population of any region changes from high births and high deaths to low births and low deaths as society progresses from rural agrarian and illiterate to urban industrial and literate society. These changes occur in stages which are collectively known as the demographic cycle.

The urban societies have low birth and low death rates. Which of the following is NOT a reason for this ?

None of the above

The correct answer is Option 4: None of the above

All the given factors are reasons for low birth and low death rates in urban societies:

• Improvements in sanitation: Better waste management, clean water supply, and improved sewage systems significantly reduce the spread of infectious diseases, leading to lower death rates.

• Better health conditions: Advancements in medical technology, access to hospitals, vaccination programs, and better nutrition lead to increased life expectancy and lower infant and maternal mortality rates.

• Family planning: Increased education, empowerment of women, and access to contraceptive methods in urban settings directly lead to a decline in birth rates as families choose to have fewer children.

Since all the statements are valid reasons, none of them is incorrect. Hence, “None of the above” is the correct answer.