The correct answer is (b), The Constitution.
The Constitution of India is the supreme law of India. It was adopted on 26 November 1949, by the Constituent Assembly of India, and came into effect on 26 January 1950. The Constitution establishes the basic structure of the Indian government and defines the fundamental rights and duties of citizens. It also provides for the division of powers between the central government and the state governments.
The Constitution is the supreme law of India because it is the supreme source of authority in the country. All laws and policies must be consistent with the Constitution. The Supreme Court of India is the highest court in the country and has the power to strike down laws that are inconsistent with the Constitution.
The other options are incorrect because they are not supreme in the Indian polity. The Supreme Court is the highest court in the country, but it is not supreme over the Constitution. The Parliament is the supreme legislative body in the country, but it is not supreme over the Constitution. The religion is an important part of Indian culture, but it is not supreme over the Constitution.