The correct answer is the Preamble of the constitution. • Pandit Thakur Das Bhargava, a member of the Constituent Assembly, summed up the importance of the Preamble in the following words: ‘The Preamble is the most precious part of the Constitution. It is the soul of the Constitution. It is a key to the Constitution. It is a jewel set in the Constitution. It is a proper yardstick with which one can measure the worth of the Constitution’. Explanation & Key Takeaways: • Preamble • The Preamble to the Constitution of India is a brief introductory statement that sets out guidelines, which guide the people of the nation, present the Constitution's principles, and indicates the source from which the document derives its authority and meaning. • The hopes and aspirations of the people are described in it. • The preamble can be referred to as the preface which highlights the entire Constitution. • It was adopted on 26 November 1949 by the Constituent Assembly and came into effect on 26 January 1950, celebrated as the Republic day in India. • The hopes and aspirations of the people and the ideals before our nation are described in the preamble in clear-cut words. Therefore it is considered as the soul of the Constitution. Important Notes: • In the Berubari Case (1960) Supreme Court held the view that Preamble cannot be a part of the constitution but later in Kesavananda Bharati Case (1973), the Supreme Court gave a comprehensive verdict. • It said that Preamble is part of the Constitution and is subject to the amending power of the parliament as are any other provisions of the Constitution, provided the basic structure of the Constitution is not destroyed. • It has been clarified by the Supreme Court that being a part of the Constitution, the Preamble can be subjected to Constitutional Amendments exercised under article 368, however, the basic structure cannot be altered. Clarification: • During the Constituent Assembly debate, Dr. B.R Ambedkar had said that Article 32 is the heart and soul of the Constitution. • Article 32 is based on the right to Constitutional Remedies.