Ok, Luke. You've submitted quite a few questions now and most of them have been exceedingly easy. It's time you started doing a little thinking on your own.
Think about what the question is asking you and go down the list of possible answers and evaluate each one to see if it really answers the question. You will find that only one of these "answers" is the one that actually makes any sense at all, particularly in light of what we have already told you.
