Which of the following are the classification of tribes according to their 'permanent traits'?

(A) Language
(B) Mode of livelihood
(C) Physical characteristics
(D) Ecological habitat

Choose the correct answer from the options given below:

(A), (C) and (D) only

The correct answer is Option (4) → (A), (C) and (D) only

In terms of positive characteristics, tribes have been classified according to their ‘permanent’ and ‘acquired’ traits. Permanent traits include region, language, physical characteristics and ecological habitat.