The correct answer is OPTION D (A section of a Rondo).
A rondo form generally involves alternating the refrain (which is the main progrtession) with one or more episodes (contrasting themes). The episodes, also called "digressions" or "couplets" is normally in a different key<span> from the main key.</span>
Answer: Easy!
G. F. Handel and J. S. Bach
Explanation:
