Explanation:

Let’s review each statement:

- A. Any of the lists in the Seventh Schedule

- Requires ratification by at least half the states, as it affects the federal structure (Article 368, Proviso).

- B. Article 54, Article 55 and Article 73

- Article 54 and 55 (Election of President) require such ratification. Article 73 deals with the Union’s executive power and is included if changed in ways affecting state interests.

- C. Chapter VII

- There’s no Chapter VII in the current Constitution; this is likely not relevant.

- D. Chapter I of part IX

- Deals with Panchayats; amendments here don’t require half-state ratification—only ordinary procedure.

Correct Option: 1, A and B