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Which of the following observations best supports the conclusion that dolphins and sharks do not have a recent common ancestor?

ADolphins form social groups, but sharks are solitary.
BDolphins hunt during the day, but sharks are nocturnal.
CThe number of dolphin species is far less than the number of shark species.
DThe jawbone structure in dolphins is very different from the jawbone structure in sharks.

Verified Answer :

The answer is D. Their jawbone structures are too different.

tadvisohil886

The asnwer is D.

this is because the traits in all the other options are acquired traits and on this basis, we cannot classify them. Instead, we look for some deeper features like the structure of their bodies. Thus, i conclude that the  the answer is D

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