Question

Which group of animals has a backbone?
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1 point
Invertebrates
Mammals
Amphibians
All of the above

Answer 1

The correct answer is "Mammals" and "Amphibians." Both of these groups of animals have a backbone. Invertebrates, by definition, do not have a backbone. Therefore, the correct response would not be "All of the above." If you need to choose one answer that fits within the options, you might select either "Mammals" or "Amphibians."