Correct Option: C

Brain capacity in decreasing order:- Homo sapiens (1300 - 1600 c.c) Homo neanderthalensis (approx. 1400 c.c.) Homo eractus (600 - 700 c.c.) Homo habilis (550 - 687 c.c.) Thus the lowest brain capacity is of Homo habilis as shown above. Homo habilis lived in early pleistocene period and used tools of chipped stones.