The diagram compares forelimb skeletons across three mammals.
These structures are best classified as
- A
Vestigial - non-functional remnants
- B
Analogous - convergent evolution
- Ccheck_circle
Homologous - common ancestry
- D
Atavistic - reappearance of ancestral trait
Explanation
Despite different functions (grasping, swimming, flying), the bones share the same arrangement (humerus, radius/ulna, carpals, digits). This pattern indicates inheritance from a common ancestor - homology.