The question is asking which of the listed organizations are extra-constitutional and extra-legal, meaning they are not part of the formal structure of the Indian Constitution or legal system, but they have been created to help facilitate coordination and cooperation between states.

Option 1 is the correct answer. All three entities mentioned here i.e., The National Development Council, The Governors’ Conference, and Zonal Councils are extra-constitutional and extra-legal as they are not created under any act of the parliament or the constitution.

The National Development Council is an advisory body for development planning. The Governors’ Conference is an occasional meeting of governors to discuss administrative issues. Zonal councils are advisory bodies for fostering interstate cooperation and coordination.

Option 2 includes the Inter-State Council, which is a constitutional body, not an extra-constitutional one as it is established under Article 263 of the Constitution of India.

Option 3 and 4 include the Inter-State Council which is wrong as given above. Thus, the provided answer is correct.