4. How does the author's discussion of Paul McCartney and René Descartes contribute to the
development of ideas in the text (Paragraphs 8-9)?
A. It shows how new and influential ideas can come from dreams.
B. It proves that intelligent people tend to have more complex dreams.
C. It demonstrates the importance of trying to understand our dreams.
D. It supports the theory that your brain is organizing information as you sleep.