Which is best and why?<br/><br/><i></i><br/><br/><i>a) They all mean the same thing, that the people you are trying to convince already believe in what you are saying. </i><br/><br/><i></i><br/><br/><i>b) They all mean the same thing and that the people you are trying to convince already believe in what you are saying. </i><br/><br/><i></i><br/><br/><i>c) They all mean the same thing, which is that the people you are trying to convince already believe in what you are saying. </i><br/><br/><i></i><br/><br/><i>d) They all mean the same thing--that the people you are trying to convince already believe in what you are saying.</i> <br/><br/><br/><br/><br/><br/>Thanks