The reorganization of states in Northeast India in the 1970s was driven by:

Linguistic and ethnic aspirations
Security concerns
Economic development goals
All of the above

The correct answer is: d) All of the above

The reorganization of states in Northeast India in the 1970s was driven by a number of factors, including linguistic and ethnic aspirations, security concerns, and economic development goals.

Linguistic and ethnic aspirations: The people of Northeast India are a diverse group, speaking a variety of languages and belonging to different ethnic groups. The reorganization of states was seen as a way to give these groups a greater say in their own affairs and to promote their cultural and linguistic identity.

Security concerns: The Northeast region of India has long been a hotbed of insurgency and violence. The reorganization of states was seen as a way to improve security in the region by creating smaller, more manageable units.

Economic development goals: The Northeast region of India is one of the poorest regions in the country. The reorganization of states was seen as a way to promote economic development in the region by creating larger, more viable economic units.

In conclusion, the reorganization of states in Northeast India in the 1970s was driven by a number of factors, including linguistic and ethnic aspirations, security concerns, and economic development goals.