Final answer:
The dish-shaped pelvis, curved spine, and arched feet are all related to the hominin trait of bipedalism.
Step-by-step explanation:
The dish-shaped pelvis, curved spine, and arched feet are all related to the hominin trait of bipedalism. These anatomical features have evolved in hominins to facilitate successful upright walking on two feet. The angling of the femur, spinal curves, and the arch in the foot all contribute to balancing the weight of the upper body and transmitting weight during bipedal locomotion.