The correct answer is 2 and 3 only. Key Points The tribes of the Andaman Islands - the Jarawa, Great Andamanese, Onge and Sentinelese - are believed to have lived in their Indian Ocean home for up to 55,000 years. Hence, Statement 1 is NOT correct. Considered as one of the most isolated people on earth, the Jarawa are a hunter-gatherer tribe that has lived in the dense forests of the Andaman Islands which is completely cut off from the outside world for thousands of years. Hence, Statement 2 is correct. However, with the increasing flow of outsiders, the Jarawas are facing the threat of extinction. Today, approximately 400 members of the nomadic Jarawa tribe live in groups of 40-50 people in chaddhas - as they call their homes. They are kept in the category of Scheduled Tribes. Hence, Statement 3 is correct. Additional Information Some more facts about Jarawas: Contraceptive methods used by Jarawa: Contraceptive leaves known as Vachahi and Hatho are used. There are specific divisions of labour among the jarawas when they are on movement. Male members pick and carry their hunting implements and clean the way, the female members carry the food articles and other household belongings. The Jarawas of both the sexes do not wear any kind of clothes. However, some ornaments are worn by them but these are not in the sense to cover their nudity. The marriage generally occurs between the adolescents. A widow/widower can get married in the Jarawa community. Though the Jarawa are strictly monogamous, subsequent marriages are common.