When your message is complex and includes a large amount of information, _______
A. audiences will not expect you to have only one main idea.
B. a variety of techniques (such as brainstorming) can help determine your main idea.
C. effective communicators realize that trying to find a single main idea is a waste of time.
D. it is best to allow the audience to figure out the main idea on their own.
E. it is not necessary to determine a single main idea, as long as you are clear about the topic.