The correct answer is: C. 21st April, 1960
Kinnaur district was formed on 21st April, 1960, when it was carved out of the erstwhile district of Simla. It is one of the 12 districts of Himachal Pradesh, India. The district is located in the eastern part of the state and is bordered by the states of Uttarakhand to the north, Arunachal Pradesh to the east, and China to the south. The district has a population of about 200,000 people and its headquarters is at Kinnaur town.
The district is known for its beautiful scenery and its people’s rich culture and traditions. The main languages spoken in the district are Kinnauri, Hindi, and English. The main occupation of the people is agriculture. The district is also home to a number of tourist attractions, including the Kinnaur Kailash mountain range, the Nako Lake, and the Kalpa town.
The following are the brief descriptions of each option:
- Option A: 1st September, 1972: This is the date on which Himachal Pradesh became a full-fledged state of India. However, Kinnaur district was already a part of Himachal Pradesh before this date.
- Option B: 1st August, 1954: This is the date on which the state of Himachal Pradesh was formed. However, Kinnaur district was not a part of Himachal Pradesh at this time.
- Option C: 21st April, 1960: This is the correct answer. Kinnaur district was formed on this date.
- Option D: 21st April, 1964: This is the date on which the Kinnaur district was reorganized. However, it was already a part of Himachal Pradesh before this date.