The Parliament can make any law for whole or any part of India for implementing international treaties
- without the consent of any State
- with the consent of all the States
- with the consent of the State concerned
- with the consent of the majority of States
The constitution empowers parliament to make laws on any matter in state list under five extra ordinary circumstances - Rajya sabha passes resolution, national emergency, states make a request, to implement international agreements, during president's rule.
The correct option is A.