Explanation:

None of the above

National Integration Council:

The National Integration Council is not a constitutional body. It is a non-statutory advisory body that aims to promote the concept of national integration and communal harmony.

The North-Eastern Council:

The North-Eastern Council is a statutory body. It was created by the North Eastern Council Act, 1971, which makes it a constitutional body.

The University Grants Commission (UGC):

The University Grants Commission is not a constitutional body. It is a statutory body created by the University Grants Commission Act, 1956.

Therefore, the correct option is 4 (None of the above) based on the inclusion of the North-Eastern Council as a constitutional body.