The correct answer is (d). Uttarakhand came into existence on November 5, 2000. It was carved out of the northern part of the state of Uttar Pradesh. The state is named after the Himalayas, which lie to its north. The capital of Uttarakhand is Dehradun. The state has a population of over 10 million people. The main languages spoken in Uttarakhand are Hindi, Garhwali, and Kumaoni. The economy of Uttarakhand is based on agriculture, tourism, and forestry.
Option (a) is incorrect because Uttarakhand came into existence on November 5, 2000, not September 11, 2000.
Option (b) is incorrect because Uttarakhand came into existence on November 5, 2000, not September 11, 2001.
Option (c) is incorrect because Uttarakhand came into existence on November 5, 2000, not November 11, 2001.