The most accepted line of descent in human evolution is
1
Australopithecines → Ramapithecus → Homo sapiens → Homo habilis
2
Homo erectus → Homo habilis → Homo sapiens
3
Ramapithecus → Homo habilis → Homo erectus → Homo sapiens
4
Australopithecines → Ramapithecus → Homo erectus → Homo habilis → Homo sapiens