Answer:
The answer is option D.
Step-by-step explanation:
every scene is typically in a different key from the primary key. However, a key change isn't what an Episode is; an Episode is a segment of a Rondo that includes a key change. In rondo frame, the hold back (which shapes the principal theme) alternates with the scenes (which might be at least one differentiating subjects). Different names for Episodes are "diversions" or "couplets