Article 253 of the Constitution enables Parliament to make law on any subject in any list. Under what condition does this power become available?

1. Article 253 grants Parliament power to make law on **any subject in any list** for the purpose of **implementing an international obligation**. 2. Specifically, it covers (i) any treaty, agreement or convention with any other country or countries, and (ii) any decision made at an international conference, association or other body. 3. The clause exists because foreign affairs is exclusively Parliament's domain but a treaty often requires implementing legislation on subjects otherwise outside Parliament's reach. Article 253 bridges this gap. 4. Options B, C and D do not correspond to Article 253 — they invent triggers not present in the constitutional text. _Source: ICSI CS Executive — Lesson 2, 'Legislation for enforcing international agreements (Article 253)', p. 65._