Step 1: Understand the anatomical terminology used in the question. 'Distal' refers to structures farther away from the trunk of the body, while 'proximal' refers to structures closer to the trunk.
Step 2: Identify the anatomical structures listed in the options. These include phalanges (fingers), metacarpals (bones of the hand), carpals (wrist bones), radius/ulna (forearm bones), and humerus (upper arm bone).
Step 3: Arrange the structures in order from distal to proximal based on their location in the upper limb. Start with the phalanges (farthest from the trunk), followed by metacarpals, carpals, radius/ulna, and finally the humerus (closest to the trunk).
Step 4: Compare the arrangement you determined with the options provided in the question. Look for the option that matches the correct distal-to-proximal order.
Step 5: Select the correct answer based on the comparison. Ensure that the sequence aligns with the anatomical hierarchy of the upper limb from distal to proximal.