Final answer:
The lateral view of the right foot is the best projection to demonstrate the cuboid bone, highlighting its anatomical position and distinctive features, including its relationship with the calcaneus bone and metatarsals.
Step-by-step explanation:
The projection of the foot that best demonstrates the cuboid bone is the lateral view of the right foot. The cuboid is one of the seven tarsal bones of the posterior foot, and it articulates with the anterior end of the calcaneus bone. It also has a distinctive deep groove across its inferior surface for muscle-tendon passage, making it identifiable in this projection. The lateral view provides a clear image of the contours and articulations of the cuboid, especially where it meets the calcaneus and the - sometimes visible - fourth and fifth metatarsal bones.