The tribal population in Andaman and Nicobar Islands belongs to the

The correct answer is Option 4 (Negroid race).

The indigenous tribes of the Andaman and Nicobar Islands are broadly categorized into two distinct ethnic groups based on their racial lineage. The tribes inhabiting the Andaman Islands—namely the Great Andamanese, Onge, Jarawa, and Sentinelese—are classified as Negrito (a subgroup of the Negroid race). They are characterized by dark skin, frizzy hair, and short stature, believed to be among the earliest human settlers to migrate from Africa.

While the tribes of the Nicobar Islands (the Nicobarese and Shompen) exhibit Mongoloid features, the question refers to the tribal population of the archipelago as a whole in a general anthropological context, where the "Negrito" element is the most distinct and frequently cited characteristic of the region's primitive tribal groups. Options 1 (Australoid) and 2 (Caucasoid) are incorrect as these racial groups do not have indigenous roots in these islands.