The correct answer is D. Bodhgaya.
Bodhgaya is a town in the Indian state of Bihar. It is one of the four holy sites related to the life of Gautama Buddha, the founder of Buddhism. Bodhgaya is where Gautama Buddha attained enlightenment under the Bodhi tree. The Mahabodhi Temple, a UNESCO World Heritage Site, was built at the spot where the Buddha is said to have sat.
The Japanese built a World Peace Stupa in Bodhgaya in 1969. The stupa is a symbol of peace and harmony between different religions and cultures. It is a popular tourist destination and a place of pilgrimage for Buddhists from all over the world.
The other options are incorrect. Deo is a town in the Indian state of Jharkhand. Rajgir is a town in the Indian state of Bihar. Gaya is a town in the Indian state of Bihar.