D) A central idea is often stated directly, while a theme is usually only suggested.
My best choice for this would be A.
Answer:
The speaker should begin by showing the topic's relevance to the audience and then relate the topic to ideas and experiences about which the audience holds a positive attitude if the topic of the speech is new to the listeners.
Explanation:
When the audience a speaker is going to have is totally new in the topic that is presenting, they need to get an introduction in order to feel interested by the topic and then when it is related to them as the speaker expresses ideas and examples the idea will be reinforced and it will be followed in the audience's mind the process of embracing it.
