Answer:
The correct answer is option B-large brain size.
Explanation:
Hominins are the living being which is a type or tribe of a group of an organism called primates. These primates are also called hominids.
Hominin represents the living group of the organism which shows three important characteristics:
1. Bipedalism: the ability to walk on two legs.
2. Large cranial size: large brain capacity (1500 cc) of Homo sapiens.
3. Reduced canine size: reduced size of teeth.
The only living hominin is "humans".
Thus, option B-large brain size is the correct answer.
