Which of the following statements describing hominin evolution is/are correct Select all that apply.
1. The first hominin species evolved from chimpanzees.
2. Hominin species began to walk on two legs in order to free their hands to use tools.
3. Homo sapiens is the only surviving member of a highly branched evolutionary tree of hominin species.

3. Homo sapiens is the only surviving member of a highly branched evolutionary tree of hominin species.

Explanation:

This is regarded as the group consisting of modern humans, extinct human species and all our immediate ancestors (including members of the genera Homo, Australopithecus, Paranthropus and Ardipithecus).

It should be understood that the genus Ardipithecus, which lived in East Africa from about 5.8 to 4.4 million years ago, is the most likely ancestor of the hominins. It had taken the first step on the road to bipedalism, while retaining many ape-like traits. But, the earliest known true hominins belonged to the genus Australopithecus.

In this case, there are 4 evolutionary trends or changes that occurred during hominin evolution, these include

* bipedalism- being able to walk upright on two feet.

* dental changes- face is getting smaller, jaw is changing shape, so teeth change because of changing diets.

* cranial capacity- expanding area in hominin cranium.

* material culture- complexity of human made objects increasing over time.