Demographic data is NOT important for which of the following?

Preventing disintegration of joint families

The correct answer is Option (3) → Preventing disintegration of joint families

Demographic data primarily provide insights into the composition, distribution, and trends of populations, which are crucial for planning and implementing state policies, promoting general public welfare, and fostering economic development. However, they are not directly relevant to preventing the disintegration of joint families, which is influenced more by sociocultural factors rather than demographic statistics.