What did the postcranial remains of H. habilis suggest about its physical characteristics?

The postcranial remains of Homo habilis indicate that this species had longer arms and shorter legs in comparison to modern humans. This characteristic is an important aspect of understanding its physical adaptations and lifestyle.

Homo habilis is believed to have retained some features from its australopith predecessors, which were adapted for climbing as well as bipedal locomotion. The longer arms suggest a continued reliance on some arboreal activities, unlike modern humans who show a more specialized adaptation to fully terrestrial living. This anatomical structure indicates a transitional form in human evolution, illustrating a blend of traits that highlight both the ancestral links to earlier hominins and the emerging characteristics that would eventually lead to more efficient bipedalism seen in later Homo species.

By contrast, the other options suggest various proportions that do not align with the evidence found in the fossil record for Homo habilis, which distinctly exhibits longer arms relative to its legs, setting it apart from the proportionate limb lengths that characterize modern humans.