Brain capacities of Homo erectus was around :

900 cc

The correct answer is Option (1) - 900 cc

Homo erectus appeared about 1.5 million years ago. They probably ate meat. Homo erectus evolved from Homo habilis . Males were probably larger than females. He had erect posture. His skull was flattened than that of modern man. He had protruding jaws, projecting brow ridges and small canines and large molar teeth. The cranial capacity was 900cc. Cranium was domed to accommodate the large brain. He was omnivorous. He made more elaborate tools of stones and bones, hunted big game and perhaps new the use of fire.