The diagram shows the internal skeletal structures of the forelimbs of a human, a dolphin, a bat, and a horse.
What is the most accurate evolutionary explanation for these structural similarities and differences?
The limbs are analogous structures that arose through convergent evolution to adapt to similar environments.
The limbs are vestigial structures that no longer serve any specific biological function.
The limbs are homologous structures that share a basic plan inherited from a common ancestor, modified over time for different functions.
The differences in structure prove that these species evolved independently without any shared ancestry.