The correct answer is: a) The Ahom King’s residence.
Kareng Ghar is a palace complex in Sibsagar, Assam, India. It was built in the 17th century by the Ahom kings. The complex consists of a number of buildings, including the main palace, the audience hall, the treasury, and the armory. The Kareng Ghar was the seat of the Ahom government and the residence of the Ahom kings. It is now a museum and a popular tourist destination.
Option b) is incorrect because the Kareng Ghar was not an armory or royal treasury. The armory and royal treasury were located in separate buildings in the Kareng Ghar complex.
Option c) is incorrect because the Kareng Ghar was not an administrative center. The administrative center of the Ahom kingdom was located in the Rangpur Palace in Guwahati.
Option d) is incorrect because the Kareng Ghar was not a place of worship. The Ahom kings were Hindus, and they worshipped in temples.