there is a picture and i will mark a brainliest! : )

Since it's asking what does the endoskeleton NOT do, either B or C have to be the answer becuase they're opposites and both of them can't be correct at the same time. The next bit of information is given to you in the question. Endoskeleton means the inside skeleton, just like how the exoskeleton means the outside skeleton.

The answer is B.

I think its the endoskeleton supports the body from the outside but im not quite sure