The correct answer is: B. 15th November, 2000.
The High Court of Jharkhand was established on 15th November, 2000 by the Jharkhand High Court Act, 2000. It is the highest court in the state of Jharkhand. The court is located in Ranchi, the capital of Jharkhand.
The High Court of Jharkhand has jurisdiction over all civil and criminal cases arising in the state of Jharkhand. It also has appellate jurisdiction over the decisions of the lower courts in the state.
The High Court of Jharkhand is headed by a Chief Justice and has a number of other judges. The judges are appointed by the President of India on the recommendation of the Chief Justice of India.
The High Court of Jharkhand is an important institution in the state of Jharkhand. It plays a vital role in the administration of justice in the state.
The other options are incorrect.
Option A is incorrect because the High Court of Jharkhand was established on 15th November, 2000, not 8th April, 1976.
Option C is incorrect because the High Court of Jharkhand was established on 15th November, 2000, not 6th March, 1972.
Option D is incorrect because the High Court of Jharkhand was established on 15th November, 2000, not 10th December, 2001.