Final answer:
The third movement of Beethoven's Moonlight Sonata does not have a lighthearted rondo. Option D is correct.
Step-by-step explanation:
The third movement of Beethoven's Moonlight Sonata, unlike a lighthearted rondo, is a perpetuum mobile marked by a stormy, dramatic character and follows a sonata-allegro form. Beethoven's choice of structure in this movement diverges from a lighthearted rondo, which typically consists of a recurring theme alternating with contrasting sections in a lighter, more playful manner.
In contrast, the Moonlight Sonata's third movement maintains a relentless, fast-paced momentum, marked by continuous semiquaver movement throughout, creating a sense of urgency and drama. Beethoven deviates from the typical rondo style by infusing it with intense emotions and a continuous, driving energy, rather than the expected lightness associated with a rondo. Thus, while the movement is indeed dramatic and follows a sonata-allegro form, it notably does not exhibit the characteristic lightheartedness of a rondo.
Correct answer: d. lighthearted rondo