Which statement about the listed vertebrates is true?

Which statement about the listed vertebrates is true?

• A. Whales are Invertebrates
• B. Rattlesnakes are Invertebrates
• C. Goldfish are Invertebrates
• D. Whales, Rattlesnakes, Goldfish, and Falcons are all Vertebrates

Answer: (D)

Vertebrates are animals with backbones, which is what distinguishes them from invertebrates that lack a backbone. Whales are mammals with a spine, rattlesnakes are reptiles with a backbone, goldfish are fish with a backbone, and falcons are birds with a backbone. Since every listed animal has a backbone, they are all vertebrates. The statements saying any of these animals are invertebrates aren’t true because backbones are present in all of them.

Vertebrates are animals with backbones, which is what distinguishes them from invertebrates that lack a backbone. Whales are mammals with a spine, rattlesnakes are reptiles with a backbone, goldfish are fish with a backbone, and falcons are birds with a backbone. Since every listed animal has a backbone, they are all vertebrates. The statements saying any of these animals are invertebrates aren’t true because backbones are present in all of them.