Question

what is a function of the backbone in animals?
○ it protects against predators.
○ it regulates blood glucose.
○ it surrounds the spinal cord.
○ it limits movement.
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Explanation:

The backbone (vertebral column) in animals surrounds and protects the spinal cord. Protecting against predators is not its main function. Regulating blood glucose is done by organs like the pancreas. The backbone actually allows for movement rather than limiting it.

Answer:

It surrounds the spinal cord.