Answer:
The correct answer is a. those traits are from a common ancestor.
Explanation:
Homologous structures are the structure that may be superficially different or may do not share the same function but they are developmentally related to each other because homologous structures are derived from a common ancestor.
For example, wings of bats and forelimbs of birds are homologous structures which means they share a common ancestor. Divergent evolution is responsible for producing homologous structures. In divergent evolution, related species become more dissimilar. Therefore the correct answer is a.
