Concept:
• There is a distinction between the date of "Adoption" and the date of "Commencement" of the Indian Constitution.
• This information is explicitly mentioned in the Preamble of the Constitution of India.
Step 1: Refer to the Preamble
The closing line of the Preamble states: "...IN OUR CONSTITUENT ASSEMBLY this twenty-sixth day of November, 1949, do HEREBY ADOPT, ENACT AND GIVE TO OURSELVES THIS CONSTITUTION."
Step 2: Distinguish from Republic Day
While the Constitution was adopted on 26th November 1949 (now celebrated as Constitution Day), it came into full force (commencement) on 26th January 1950 (Republic Day) to commemorate the Purna Swaraj declaration of 1930.
Step 3: Conclusion
The question specifically asks for the date it was "adopted, enacted and given," which is 26th November 1949.