Final answer:
The skeleton of Nariokotome Boy reveals that early hominins like 'Ardi' had adaptations for bipedal locomotion similar to modern humans.
Step-by-step explanation:
The skeleton of Nariokotome/Turkana boy, a specimen of Homo ergaster, provides insights into the locomotion abilities of early hominins like "Ardi" compared to modern humans. The Nariokotome Boy had longer legs, a broader pelvis, and arched feet, which are adaptations for efficient bipedal locomotion similar to modern humans. These traits indicate that early hominins like Ardi were becoming increasingly proficient at walking upright.