The correct answer is option 4, the Constitution. In India, legal sovereignty is vested with the Constitution. The Constitution is the supreme law of the land and it establishes the framework and principles of governance in India. It sets out the rights, powers, and duties of various individuals, institutions, and organs of the government. The Constitution also provides for a system of checks and balances to ensure that no single entity or branch of government becomes too powerful. It is the Constitution that defines the powers and limitations of the President, Judiciary, and Cabinet, making them subservient to the overarching authority of the Constitution. Therefore, legal sovereignty in India rests with the Constitution, which serves as the foundation and guiding document of the nation.