The correct answer to the question is option 2: 1, 2 and 3.

To understand why this is the correct answer, let`s analyze each option:

1. Article 54 of the Constitution: This article deals with the election of the President of India. Any amendment bill seeking to make changes to Article 54 would require ratification by the legislatures of not less than half of the states. Therefore, option 1 is correct.

2. Lists in the Seventh Schedule: The Seventh Schedule of the Constitution contains three lists - the Union List, the State List, and the Concurrent List. These lists enumerate the subjects on which the Union government, the State governments, and both can legislate, respectively. Any amendment bill seeking to make changes to any of these lists would also require ratification by the legislatures of not less than half of the states. Therefore, option 2 is correct.

3. Representation of states in the Parliament: The representation of states in the Parliament is determined by various provisions in the Constitution, such as the allocation of seats in the Lok Sabha and the Rajya Sabha. Any amendment bill seeking to make changes to the representation of states in the Parliament would also require ratification by the legislatures of not less than half of