In a rondo form, which of the following best describes the structure of participation?

In rondo form, the structure typically alternates a recurring theme (A) with contrasting sections (B, C, D, etc.). This format is designed to provide musical contrast while returning to the familiar theme, creating a sense of cohesion throughout the piece.

When considering participation, the correct answer indicates that a specific section, in this case, a section that varies from the recurring theme, involves group participation. This reflects the nature of rondo form where different sections can offer opportunities for diverse musical activities, allowing participants to engage collectively during that contrasting segment. This structure encourages collaboration and interaction, which is fundamental in music therapy settings where group dynamics play a crucial role in therapeutic outcomes.

The other options suggest varying degrees of involvement or restrict participation in a way that does not align with the typically flexible and collective nature of the sections in a rondo form. Thus, identifying that a specific section involved group participation acknowledges the intent of the form to bring musicians together while also allowing for variety and contrast within the musical experience.