The correct answer is: a) Kebang.
Kebang is the traditional socio-political institution of the Adi tribe. It is a council of elders that is responsible for settling disputes, making decisions about land use, and organizing festivals and other community events. The Kebang is also responsible for maintaining law and order in the community.
Morung is a dormitory for unmarried boys in the Naga Hills. It is a place where boys learn about their culture and traditions, and where they prepare for adulthood.
Panchayat is a traditional village council in India. It is responsible for settling disputes, maintaining law and order, and providing basic services to the community.
Khap is a caste council in northern India. It is responsible for maintaining social order and resolving disputes within the caste.
Kebang is the most important traditional institution of the Adi tribe. It is a powerful and influential body that plays a vital role in the lives of the Adi people.