Question: What is an example of a tetrapod vertebrate?\nOptions:\n- (A) genus\n- (B) Leeuwenhoek\n- (C) a fish\n- (D) crocodile\n- (E) animals\n- (F) four limbs\n- (G) warm-blooded\n- (H) graptolites
Let's be accurate as possible and think step-by-step.
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Reptiles are a class of tetrapod vertebrates that produce amniotic eggs. Crocodiles, snakes, and lizards are all types of reptiles. Crocodiles are a type of tetrapod vertebrates that make amniotic eggs.
The answer: (D).
Assistant