The most primitive tribe of India is

Gonds
Jarwas
Juangs
Lepchas

The correct answer is (b), Jarwas.

The Jarwas are an indigenous tribe of the Andaman Islands. They are one of the most isolated and primitive tribes in India. The Jarwas are hunter-gatherers and live in small groups in the forests of the Andaman Islands. They are very shy of outsiders and have resisted contact with the outside world for many years.

The Gonds are an indigenous tribe of central India. They are one of the largest tribes in India and are known for their traditional culture and art. The Gonds are farmers and live in villages. They are a very social people and have a strong sense of community.

The Juangs are an indigenous tribe of eastern India. They are known for their traditional dance and music. The Juangs are farmers and live in villages. They are a very religious people and believe in a number of gods and spirits.

The Lepchas are an indigenous tribe of Sikkim. They are known for their traditional dress and their unique language. The Lepchas are farmers and live in villages. They are a very spiritual people and believe in a number of gods and spirits.

The Jarwas are the most primitive tribe of India because they have had the least contact with the outside world. They are very shy of outsiders and have resisted contact with the outside world for many years. The Jarwas are hunter-gatherers and live in small groups in the forests of the Andaman Islands. They are very traditional people and have a strong sense of community.