All these sentences use the word "so" correctly except: A. Unlike the hair on your head, arm hair stops growing and breaks off regularly; so does leg hair. B. Unlike the hair on your head, arm hair stops growing and breaks off regularly, so does leg hair. C. Unlike the hair on your head, arm hair stops growing and breaks off regularly, and so does leg hair. D. Unlike the hair on your head, arm hair stops growing and breaks off regularly. So does leg hair.



Answer :

"C. Unlike the hair on your head, arm hair stops growing and breaks off regularly, and so does leg hair" is the only sentence that uses "so" correctly, although the others are getting more common.
D. D is a sentence fragment and could not work in a sentence