Step 1: Understanding the Concept:
The Constitution is a dynamic document that needs to evolve with time. However, to prevent misuse, the judiciary has set limits on how much it can be changed.
Step 2: Detailed Explanation:
Under Article 368, the Parliament has the power to amend the Constitution. This power is not absolute. In the landmark Kesavananda Bharati case (1973), the Supreme Court ruled that while Parliament can amend parts of the Constitution, it cannot change its "Basic Structure" (e.g., secularism, federalism, democracy).
Step 3: Final Answer:
The power lies with the Parliament.