What was most significant about australopithecines, one of the earliest hominids? a. they lived in asia. b. they were among the first to use iron tools. c. they were primarily monogamous. d. they were in the class known as homo sapiens. e. they may have been able to walk upright on two legs?

 e. they may have been able to walk upright on two legs

The most significant about australopithecines, one of the earliest hominids os that they may have been able to walk upright on two legs- They lived in Africa and had many behaviors similar to nowadays apes. the ability to walk on two legs is important because it frees the hands to do other stuff like gather food or use instruments.