Explanation:

• Legal sovereignty represents the lawyer's conception of sovereignty. It is associated with the supreme law-making authority in the state. The body which has the power to issue final commands in the form of laws is the legal sovereign in a state. This power may be vested in one person or a body of persons. It may be a king or dictator or parliament. Legal sovereignty is organized and re-organized by constitutional law.
• Legal sovereignty in India resides in the Constitution itself and not in 'We the People of India'. This idea was expressed in "Kesavananda Bharti V. State of Kerala" case by the Supreme Court of India.

Hence option 3rd is correct.