The correct option is D I-S, II-R, III-P, IV-Q
Dryopithecus, Ramapithecus, Australopithecines, Homo habilis, Homo erectus, Homo sapiens neanderthalensis are the ancestors of modern man in chronological order.
Dryopithecus, the most primitive human ancestor, lived about 15 million years ago. They were ape-like and walked like gorillas and chimpanzees.
Australopithecines probably lived in East African grasslands about 2 million years ago. Evidence shows they ate fruit despite hunting with stone weapons.
Homo habilis is the first human-like hominid. The genus Homo was designated to this ancestor due to the increased cranial capacity and smaller molar and premolar teeth of the fossils when compared to the other primates. The other features noticed in the fossils are human like foot, and hand bones that suggested an ability to manipulate objects with great skill and precision. Simple stone tools were found along with the fossils of Homo habilis. Hence, they are also known as handy man.
Homo erectus existed 1.5 million years ago. They probably ate meat.