Final answer:
The correct answer is B: Combining elements of Rondo form with Sonata form, where Sonata-Rondo form features a recurring theme interspersed with contrasting themes, reflecting characteristics of both a sonata and a rondo.
Step-by-step explanation:
The student is asking about Sonata-Rondo form, a musical structure that is best described by option B: Combining elements of Rondo form with Sonata form. The Sonata-Rondo form is a widely used musical structure in the classical music era, notable for its hybrid nature that incorporates characteristics of both the sonata and the rondo. In its essence, Sonata-Rondo form typically features a recurring theme (A) interspersed with contrasting themes or episodes (B, C, etc.) and often includes a development section similar to that of a sonata.