Final answer:
Option 2, which contains phalanges, is the correct choice as it only includes bones from the upper limbs. Phalanges are the bones in the fingers of the hands belonging to the upper limb, unlike the femur and tibia which are lower limb bones, and separate from the radius which is not the only bone listed.
Step-by-step explanation:
The question asks to identify which choice only contains bones of the upper limbs. The upper limbs include several specific bones as referenced in the question.
Option 2: Phalanges are the bones found in the fingers of the hands, which are part of the upper limbs. Therefore, Option 2 containing phalanges is the correct choice as it only includes bones from the upper limbs. The other options, such as the femur and tibia, are bones of the lower limb, while the radius, although being an upper limb bone, is not the only bone mentioned. Hence, among the presented options, only the phalanges pertain exclusively to the upper limb.
The bones of the upper limb consist of the humerus in the upper arm, the radius and ulna in the forearm, the carpal bones in the wrist, the metacarpal bones in the hand, and the phalanges in the fingers.