Answer:
B. Connect fashion to something the audience already knows might help Paul make his speech more effective
Explanation:
It is mentioned that all of them are interested in design so Paul could connect fashion by focusing on the main points that all kinds of design have a shared foundation, that way his audience will feel related and appeal towards the topic. By doing this he won't just achieve his goal of having a successful speech but he will be able to convey all his message as extra details or extension of information from the base that they already know.