The correct answer is (b), 2003.
The Uttaranchal (Change of Name) Act, 2003 was an Act of the Parliament of India enacted to change the name of the state of Uttaranchal to Uttarakhand. The Act was passed on 9 November 2003 and came into force on 1 January 2007.
The Act was passed following a demand from the people of Uttaranchal for a change in the name of the state. The name “Uttaranchal” was considered to be too similar to the name of the neighbouring state of Uttar Pradesh. The new name, “Uttarakhand”, was chosen to reflect the state’s unique culture and history.
The Act also provided for the creation of a new state government and for the transfer of assets and liabilities from the old state to the new state. The Act was a major step in the process of state formation in India.
The other options are incorrect. Option (a), 2000, is incorrect because the Uttaranchal (Change of Name) Act was not enacted in 2000. Option (c), 2006, is incorrect because the Uttaranchal (Change of Name) Act came into force in 2007, not 2006. Option (d), None of these, is incorrect because the Uttaranchal (Change of Name) Act was indeed enacted in 2003.