Which of the following is NOT an anatomical change that would be associated with a transition from four to two legs?

Question

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A transition from four legs to two involves several anatomical changes to support bipedalism. An S-shaped spine (A) helps balance the body directly over the pelvis, and a repositioned foramen magnum (B) allows the skull to balance on the spine, both adaptations for upright walking. A narrower foot (C) provides more efficient support and balance for bipedal locomotion. A wider stance, however, is not associated with bipedalism; instead, a narrower stance is more efficient for walking on two legs, as it aligns the body's center of gravity over a smaller base of support.

Which of the Following Is NOT an Anatomical Change That