Explanation: The preamble refers to the introduction or preface to the constitution. The preamble of the constitution is based on the “objectives resolution”, drafted and moved by the Jawaharlal Nehru, and adopted by the constituent assembly on 26 November 1949. The words ‘Socialist ‘Secular” and ‘Integrity were initially not there in the Preamble. These were added by the 42nd Amendment (1976) of the Constitution. ....Read more