Detailed Explanation:

The Supreme Court is the highest judicial authority in India and holds the power of judicial review under Articles 13, 32, and 131–143. It can examine any law and strike it down if it violates the Constitution.

Article 32 grants citizens the right to approach the Supreme Court directly to enforce Fundamental Rights, while Article 137 empowers it to review its own judgments. As the guardian of the Constitution, the Court's interpretation is final and binding on all courts and authorities.

Therefore, the Supreme Court is the final interpreter of the Constitution, making Option 2 the correct answer.