Renowned centers for Thangka painting in Sikkim include:

The correct answer is: d) All of the above.

Rumtek Monastery, Gangtok’s Institute of Tibetology, and Pemayangtse Monastery are all renowned centers for Thangka painting in Sikkim.

• Rumtek Monastery is a Buddhist monastery in the Indian state of Sikkim. It is the seat of the Karmapa, the head of the Karma Kagyu lineage of Tibetan Buddhism. The monastery is known for its Thangka paintings, which are made by hand using traditional methods.
• Gangtok’s Institute of Tibetology is a research institute in Gangtok, Sikkim, India. It was founded in 1958 by the 14th Dalai Lama. The institute is home to a large collection of Tibetan art, including Thangka paintings.
• Pemayangtse Monastery is a Buddhist monastery in the Indian state of Sikkim. It is the oldest monastery in Sikkim and is one of the most important monasteries in the Nyingma lineage of Tibetan Buddhism. The monastery is known for its Thangka paintings, which are made by hand using traditional methods.

Thangka paintings are a type of Tibetan Buddhist painting that are used for religious purposes. They are typically made on cotton or silk cloth and are painted with natural pigments. Thangka paintings often depict Buddhist deities, mandalas, and scenes from Buddhist history. They are an important part of Tibetan Buddhist culture and are used in a variety of religious ceremonies.