Correct Answer: (c) Kamar
Solution:Five particular backward tribes in Chhattisgarh are - Abujhmadia, Kamar, Pahari Korba, Birhar and Baigga. Kamar (or Bujja) is the particularly backward tribal group in Raipur division of Chhattisgarh. It is also found in Odisha, Maharashtra and Madya Pradesh. Halba tribe is mostly found in the states of Madhya Pradesh, Chhattisgarh (in Bastar) and Maharashtra. Binjhwar is found in Chhattisgarh, Madhya Pradesh, Maharashtra and Odisha. Kanwar is found in Odisha, Chhattisgarh, Madhya Pradesh and Maharashtra.