If you see the following negative feedbacks from audiences, like dozing, daydreaming and even strong impatience, how to “wake up your audience”?

The following statements are all true EXCEPT______. A: Wagner composed the prelude to “Rhinegold” in a dozing<br/>state B: Poincare discovered the Fuchsian function when he was unable to<br/>sleep’ C: Descartes made his discovery “I think, therefore I exist”<br/>consciously