You're Deciding on a Speech Topic, but Need Some Information

You're deciding on a speech topic, but need some information from your audience. Rather than asking them to divulge out loud their opinions on a couple of topics, you design a short questionnaire. The questionnaire asks whether a person agrees or disagrees with a series of statements regarding various topics. What form of survey are you using?

A) a close-ended, formal audience analysis survey
B) a close-ended, informal audience analysis survey
C) an open-ended, formal audience analysis survey
D) an open-ended, informal audience analysis survey