Concept:Rajya Sabha has special powers under Article 249 to enable Parliament to make laws on State List subjects.
Explanation:Rajya Sabha, being the Council of States, represents state interests.
The Constitution grants it exclusive power to pass a resolution by a two-thirds majority of members present and voting.
This resolution declares that it is necessary in the national interest for Parliament to legislate on a matter in the State List.
Once such a resolution is passed, Parliament can make a law on that subject for the whole or any part of India.
The resolution remains valid for up to one year, renewable by another similar resolution.
Other options: creation of new States (requires Parliament bill, not exclusive to Rajya Sabha), declaring war (executive power), financial emergency (President’s discretion).
Answer:D. Authorizing Parliament to legislate on a subject in the State List