The correct answer is option-1: The Supreme Court of India was set up by the Constitution.

The Constitution of India, which was adopted in 1950, establishes the Supreme Court as the highest judicial body in the country. It defines the powers, structure, and jurisdiction of the Supreme Court. The Constitution empowers the President of India to appoint the Chief Justice and other judges of the Supreme Court.

Options 2, 3, and 4 are incorrect. While laws passed by Parliament, Presidential orders, and acts of 1947 may have played a role in shaping the functioning and procedures of the Supreme Court, the establishment and authority of the Supreme Court are primarily derived from the Constitution itself.