What is a function of the backbone in animals? A. It protects against predators.
B. It regulates blood glucose.
C. It surround the spinal cord.
D. It limits movement.

C - It surrounds the spinal cord.

Explanation:

Option A would be incorrect. Having a protective shell on an animal’s back would be one of the ways they would be protected against predators. And having a backbone wouldn’t really make a good shield against predators.

Option B is incorrect. The pancreas regulates blood glucose, not the backbone.

Option D would also be incorrect. It doesn’t limit movement unless it’s bent or positioned abnormally. Or unless it’s broken or malfunctioned.

The only option that is correct is option C. Hope it helps. ^^

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

The correct answer is b