On the subjects mentioned in the concurrent list, laws may be enacted by the – (1) States and the Union (2) Union alone (3) States alone (4) States and the Union territories
(1) States and the Union Explanation: The Concurrent List contains subjects defined and enlisted under the List - HI of the Seventh Schedule of the Constitution of India, which form the joint domain of both the State Governments and the Union territories of India as well as the Central Government of India under these subjects.