PR practitioners help organizations spread their story to the targeted public. Who has the chief responsibility for this process?

In an introduction, it is NOT necessary to

A) preview the development of the topic and main points. B) gain the audience's attention. C) influence the audience to view the speaker and the topic favorably. D) clarify the purpose or thesis of the speech. E) summarize the main points.

Explain what is wrong with this purpose statement for an informative speech: "The importance of liquor policies". 

What will be an ideal response?