The correct answer is D. Vat.
Sumtinath Tirthankar was the 17th Tirthankara of Jainism. He was born in a village called Sumtina in the kingdom of Ayodhya. He attained Kaivalya Gyan (enlightenment) under a Vat tree.
A Devdar is a type of cedar tree. It is a tall, evergreen tree with needle-like leaves. The Devdar is native to the Himalayas and is considered to be a sacred tree in Hinduism.
A Neem is a type of tree that is native to India. It is a large, deciduous tree with smooth, gray bark. The Neem is considered to be a sacred tree in Hinduism and is used in traditional medicine.
A Priyangu is a type of tree that is native to India. It is a small, deciduous tree with fragrant flowers. The Priyangu is considered to be a sacred tree in Hinduism and is used in traditional medicine.
A Vat is a type of fig tree. It is a large, deciduous tree with smooth, gray bark. The Vat is considered to be a sacred tree in Hinduism and is used in traditional medicine.