The correct answer is option 4, "Union as well as Concurrent List."

In India, the Parliament has the power to make laws on subjects that are listed in three different lists: the Union List, the State List, and the Concurrent List. The Union List contains subjects on which only the central government can make laws, such as defense, foreign affairs, and banking. The State List contains subjects on which only the state governments can make laws, such as public health, police, and agriculture.

However, there are certain subjects that are included in the Concurrent List, which means that both the central and state governments have the power to make laws on those subjects. Examples of subjects in the Concurrent List include criminal law, marriage and divorce, and bankruptcy and insolvency.

Therefore, the Parliament can legislate on all the subjects listed in the Union List and the Concurrent List. This allows the central government to have authority and jurisdiction over a wide range of matters, ensuring uniformity and consistency in certain areas while still allowing the states to have some autonomy and legislative power.