The correct answer is C. 1650.
Jean-Baptiste Tavernier (1605-1689) was a French jeweller and traveller who visited India seven times between 1631 and 1668. He wrote a detailed account of his travels in a book called Les Six Voyages de Jean-Baptiste Tavernier en Turquie, Perse, aux Indes et à la Chine (1676-1681).
In his book, Tavernier describes his visit to Patna in 1650. He writes that Patna was a large and prosperous city with a population of over 100,000 people. He also describes the city’s many mosques, temples, and palaces.
Tavernier’s account of Patna is an important source of information about the city in the 17th century. It provides a glimpse into the city’s history, culture, and economy.
The other options are incorrect because they are not the years that Tavernier visited Patna.