Which of the following animal groups correctl | vedclass

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(C) Let's analyze the options:$A$. Reptiles: Most reptiles have a three-chambered heart,but crocodiles have a four-chambered heart. Thus,this is not a

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Chondrichthyes - Cartilaginous endoskeleton

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(C) Let's analyze the options:$A$. Reptiles: Most reptiles have a three-chambered heart,but crocodiles have a four-chambered heart. Thus,this is not an exception-free statement.$B$. Chordates: Not all chordates have jaws (e.g.,Agnatha are jawless vertebrates). Thus,this is incorrect.$C$. Chondrichthyes: This class is defined by having a cartilaginous endoskeleton. This is a universal characteristic for all members of this class.$D$. Mammals: While most mammals are viviparous,monotremes (like the platypus) are oviparous (egg-laying). Thus,this is not an exception-free statement.Therefore,the correct option is $C$.

Which of the following animal groups correctly matches its characteristic without any exceptions?

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