The answer is skeleton.
Please correct me if I'm wrong!! :)
I believe that on the Naive B-cell the antibodies exist as transmembrane proteins. A naive b-cell is a type of b-cell that has not been exposed to an antigen. When exposed it becomes either a memory B cell or a plasma cell that secrete antibodies specific to the antigen that was originally bound.
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Answer:
plant cells separate by forming a cell plate, animal cells membranes that elongate in cytokinesis.
Answer: D, because in the text it said "pay for her influential impact".
I hope it helped if what i said made sense.. :D