Answer :
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Answer:
A.Jake is correct because classification is based on evolutionary relationships.
Explanation:
Sophie is wrong since the modern taxonomic classification is based on homolgies, it is the existence of shared ancestry between organs or DNA sequences. In the case of sharks and dolphins, the morphological similarity is not due to homologies but to analogy.
For example, fins in dolphins and sharks are similar but they DO NOT come from the same common ancestor. They are similar structures because they have similar function (swimming) not because they share ancestor. In this case, their fins are analog structures, not homologous.