Answer:
The answer is (b) "Yes; this is a smart technique of analyzing the audience known as demographic audience analysis".
Step-by-step explanation:
Since Brenda would deliver the speech to her classmates supervised by her lecturer, it is a good way to gauge their minds regarding if they support the Patriot Act or not so as to know the direction of her speech. The demographic audience analysis is a good way of communicating with the intended audience of some information before passing the information.
Since she only intend to distribute a questionnaire on the Patriot Act and not her main speech, then she is on the right track.