Final answer:
The character of the opening theme of Debussy's Prelude to "The Afternoon of a Faun" is dreamlike and atmospheric, reflecting the impressionist style of his music.
Step-by-step explanation:
The character of the opening theme of Debussy's Prelude to "The Afternoon of a Faun" is dreamlike and atmospheric. It sets the mood for the piece and reflects the impressionist style of Debussy's music. The music begins with soft, flowing lines and delicate harmonies, creating a sense of tranquility and mystery. As the theme develops, the music becomes more fragmented and fragmented, with dissonant chords and unpredictable rhythms, capturing the faun's elusive and ethereal nature.