The cranial capacity of Homo erectus was around:

The correct answer is Option (3) → 900 cc

The human ancestors can be placed in order by the size of the brain. Homo habilis, the first human-like being, had a brain of 650–800 cc. Homo erectus, whose fossils were found in Java, lived about 1.5 million years ago and had a larger brain of around 900 cc. The Neanderthal man had a brain of about 1400 cc.

NCERT Extract:
Origin and Evolution of Man – …