The correct answer is option 1: the Union List. The Union List is a part of the Seventh Schedule of the Indian Constitution, which contains subjects on which only the Parliament can make laws. These subjects are of national importance and affect the entire country. Some examples of subjects in the Union List include defense, foreign affairs, atomic energy, and banking.

Options 2 and 3 are incorrect. The Concurrent List contains subjects on which both the Parliament and the State Legislatures can legislate. These subjects are of shared importance and affect both the Union and the States. Examples include criminal law, bankruptcy and insolvency, and marriage and divorce.

Option 4 is also incorrect. Both the Union List and the Concurrent List are included in option 4, but the correct answer is only the Union List.