Which place in Bihar has famous mausoleum of Jain Saint Sthulabhadra?

The correct answer is D. Kundalpur.

Kundalpur is a town and a notified area committee in Purnia district in the Indian state of Bihar. It is located on the banks of the Ganges River, about 100 kilometers from Purnia. The town is famous for its Jain temples and mausoleums. The most famous mausoleum in Kundalpur is that of Jain Saint Sthulabhadra. Sthulabhadra was a 6th-century Jain monk who is considered to be one of the most important figures in Jainism. His mausoleum is a popular pilgrimage site for Jains from all over the world.

The other options are incorrect. Muzaffarpur is a city in Bihar. Gonavajee is a village in Gujarat. Kamaldah is a village in West Bengal.