Which of the following states was formed in the year 2000?

Uttarakhand

The correct answer is Option 4 - Uttarakhand

The state formed in the year 2000 from the options provided is Uttarakhand.
Uttarakhand, formerly known as Uttaranchal, is a state in northern India. It was carved out of the northern part of Uttar Pradesh and came into existence on November 9, 2000, following the passage of the Uttar Pradesh Reorganization Act, 2000, by the Parliament of India.