AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Answer: (B)
In a federation, the jurisdictions and authority of each level of government are constitutionally guaranteed, so the fundamental power-sharing provisions cannot be unilaterally changed by one level alone — consent of both levels is required.
The textbook (Chapter 2, "What is Federalism?") explicitly states: "The fundamental provisions of the constitution cannot be unilaterally changed by one level of government. Such changes require the consent of both the levels of government." This is a key feature of federalism. Option A is wrong because federal constitutions don't rest on a power hierarchy of protection; Option C is wrong because states don't hold sole amendment power; Option D is wrong because Supreme Court approval is not a precondition for amendments (courts act as umpires in disputes, not approvers of amendments).