Answer:
The hominid pelvis displays many unique features (when compared to
that of quadrupedal primates) that support bipedalism. The major
adaptations are seen in the sacrum and the ilia, as well as in the
overall configuration and orientation of the pelvic bones.
Explanation:
These changes in the sacrum were for the adaption of standing on two legs,
The uniqueness is also that ilia are rotated and curved medially, bringing the lateral edge of the blade forward and projecting the top of the ilia outward laterally.
