The correct answer is: b) Naga group.
The Nocte and Wancho languages are part of the Naga group of languages, which is a branch of the Sino-Tibetan language family. The Naga languages are spoken by about 1.5 million people in India and Myanmar. The Nocte language is spoken by about 100,000 people in the Tirap district of Arunachal Pradesh, India. The Wancho language is spoken by about 50,000 people in the Changlang district of Arunachal Pradesh, India.
The Naga languages are tonal languages, which means that the pitch of a speaker’s voice can change the meaning of a word. The Naga languages also have a complex system of noun classes, which are used to classify nouns according to their meaning.
The Naga languages are a rich and diverse group of languages, and they play an important role in the culture and identity of the Naga people.
The other options are incorrect because:
- The Kuki-Chin languages are a branch of the Sino-Tibetan language family, but they are not closely related to the Naga languages.
- The Nishi languages are a branch of the Tibeto-Burman language family, but they are not closely related to the Naga languages.
- The Idu languages are a branch of the Sino-Tibetan language family, but they are not closely related to the Naga languages.