What trait is most common to all primates?

a. stereoscopic vision b. broad shoulders and a stiff, short back c. little sexual dimorphism d. a plant, fruit, and root diet

You find a fossil that you are sure shows evidence of bipedalism. you know this because which of the following anatomical traits is present? a. thighbones that angle in toward the knees b. a narrow pelvis c. opposable hallux d. posterior position of the foramen magnum