The correct answer is: A. Lahaul
Lahaul is a valley in the Indian state of Himachal Pradesh. It is located in the western Himalayas, and is known for its beautiful scenery and its rich history. The valley is home to a number of ancient temples and monasteries, and is also a popular destination for trekking and mountaineering.
Lahaul is also known as the “Fossil Park of the World” because of the large number of fossils that have been found in the area. The fossils date back to the Jurassic period, and include a variety of plant and animal life. The fossils are a valuable resource for scientists, and provide insights into the history of the Earth.
The other options are incorrect because they are not known as the Fossil Park of the World. Spiti is a valley in the Indian state of Himachal Pradesh. It is located in the eastern Himalayas, and is known for its high altitude and its harsh climate. Kalpa is a town in the Indian state of Himachal Pradesh. It is located in the Lahaul valley, and is known for its beautiful scenery and its hot springs. Morang is a district in the eastern Indian state of Assam. It is known for its tea plantations and its wildlife sanctuaries.