Biology Forums - Study Force

The locomotor anatomy of Australopithecus afarensis
  A. suggests a combination of bipedalism and arboreal climbing    
  B. includes a partial pelvic bowl    
  C. includes evidence of a close-knee stance    
  D. all of the above

It is demonstrated that A. afarensis possessed anatomic characteristics that indicate a significant adaptation for movement in the trees. Other structural features point to a mode of terrestrial bipedality that involved less extension at the hip and knee than occurs in modern humans, and only limited transfer of weight onto the medial part of the ball of the foot, but such conclusions remain more tentative than that asserting substantive arboreality.

D

thank you