Explanation:

- Santhals (Option 1):

- They belong to the Proto-Australoid group.

- Found mainly in Jharkhand, West Bengal, Odisha.

- Munda (Option 2):

- Also part of the Proto-Australoid stock.

- Predominantly in Jharkhand and Odisha.

- Oraon (Option 3):

- Another Proto-Australoid tribe.

- Mostly live in Chhattisgarh, Jharkhand, Odisha.

- Garo (Option 4):

- They are mainly found in Meghalaya.

- Not Proto-Austroloid; they belong to the Tibeto-Burman (Mongoloid) group.

- Their physical features and languages are different from Proto-Austroloids.

Correct Answer:

- Option:4, Garo