Correct Answer: (d) Korwa
Solution:Among the 32 tribes in Jharkhand, nine tribes have been classified as PTG (Primitive Tribe Groups). They are – Asur, Birhor, Birajia, Korwa, Parahiya (Baiga), Sabar, Mal Pahariya and Souriya Pahariya and Bil Kahria. In Jharkhand, the PTG population is just 2.23 lakh as per 2011 Census. They are primarily hunters and gatherers. The livelihood options of these primitive tribal groups are broadly classified as Agriculture, Forestry, Handicrafts and Handlooms.