Which animal has a circulatory system with a three-chambered heart?\nOptions:\n- (A) animals\n- (B) Salamander\n- (C) fur seals\n- (D) mammals\n- (E) alpacas\n- (F) a fish\n- (G) warm-blooded\n- (H) barnacles Let's be accurate as possible.
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Amphibians have a relatively complex circulatory system with a three-chambered heart. Frogs, toads and salamanders are amphibians. Salamanders have a relatively complex circulatory system with a three-chambered heart.
The final answer: (B).
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