The correct answer is: A. Kesaria
Kesaria is a town and a notified area committee in Patna district in the Indian state of Bihar. It is located on the banks of the Son River, about 100 km from Patna. Kesaria is famous for the Mahabodhi Temple, a UNESCO World Heritage Site. The temple is a Buddhist shrine that marks the spot where Gautama Buddha attained enlightenment.
The Mahabodhi Temple is a massive structure that is built in the Gupta architectural style. The temple is surrounded by a large complex of monasteries and stupas. The Mahabodhi Temple is one of the most important Buddhist pilgrimage sites in the world.
The highest Buddhist stupa in India is the Mahabodhi Stupa, which is located at Kesaria. The stupa is a large, hemispherical structure that is built over the remains of the Buddha. The stupa is decorated with intricate carvings and sculptures. The Mahabodhi Stupa is a UNESCO World Heritage Site and is one of the most important Buddhist pilgrimage sites in the world.
The other options are incorrect because:
- Nalanda is a town and a notified area committee in Nalanda district in the Indian state of Bihar. It is located on the banks of the Phalgu River, about 95 km from Patna. Nalanda is famous for the Nalanda Mahavihara, a Buddhist monastery that was once one of the most important centers of learning in the world.
- Rajgir is a city and a municipal corporation in Nalanda district in the Indian state of Bihar. It is located on the banks of the Son River, about 100 km from Patna. Rajgir is famous for its many historical and archaeological sites, including the Gridhrakuta Hill, the Venuvana Monastery, and the Saptaparni Cave.
- Vaishali is a city and a municipal corporation in Vaishali district in the Indian state of Bihar. It is located on the banks of the Ghaghara River, about 100 km from Patna. Vaishali is famous for its many historical and archaeological sites, including the Vaishali Stupa, the Vishwa Shanti Stupa, and the Ashokan Pillar.