Answer: A. DNA comparison, embryological evidence
Step-by-step explanation:
This is because DNA comparison is a type of genetic evidence that is used in the study of evolution to show how organisms are related to one another. Embryological evidence, on the other hand, is a type of structural evidence that looks at the similarities and differences in the embryonic development of different organisms. By comparing the similarities and differences in the DNA and embryological development of different species, scientists can gain insights into how evolution has occurred over time.
Fossilized bones, as mentioned in option B, are a type of fossil evidence that can show the physical changes that have occurred in organisms over time. Unused hind limbs, as mentioned in option C, are an example of vestigial structures, which are also a type of structural evidence for evolution. Lastly, developmental patterns, as mentioned in option D, can also be a type of evidence for evolution, but they are more commonly associated with embryological evidence rather than fossil evidence.