In which year, the Uttaranchal (Alternation of Name) Act was enacted, renaming the state as Uttarakhand?

2006

The correct answer is Option (4) → 2006

The Uttaranchal (Alteration of Name) Act was enacted in 2006.

While the state was originally carved out of Uttar Pradesh on November 9, 2000, under the name "Uttaranchal," the name was officially changed to Uttarakhand starting from January 1, 2007, following the passage of the act in December 2006.