Which of the following is not an adaptation to bipedalism in early hominids?

Which of the following is not an adaptation to bipedalism in early hominids?
  a. curvature of the spine
  b. shorter pelvis
  c. alignment of the big toes with the rest of the toes
  d. decrease in the length of the legs relative to the arms
  e. moving the foramen magnum to the base of the skull

Question 2

Which feature(s) DID NOT contribute to the ability of humans to maintain an upright body position?
  a. curvature of the spine
  b. size and position of the pelvis
  c. position of the foramen magnum
  d. alignment of the toes
  e. smaller canines