Explanation:

- The subject of "co-operation" is included in the Seventh Schedule of the Indian Constitution.

- The Seventh Schedule divides powers and subjects between the Union and State governments through three lists: Union List, State List, and Concurrent List. "Co-operation" appears in the State List (Entry 32).

- Option 1 (V Schedule) deals with the administration and control of Scheduled Areas and Tribes.

- Option 2 (VI Schedule) relates to the administration of tribal areas in Assam, Meghalaya, Tripura, and Mizoram.

- Option 4 (IX Schedule) contains laws immune from judicial review.

- Correct Answer: Option 3 – VII Schedule