During WHAT time period ?
The Gestalt Theory is otherwise known as Gestalt Psychology, which is based off of the knowledge and research that our minds are able to get a meaningful perception of the world around us that is otherwise crazy. It's main principle states the mind fills itself, and has self-organizing tendencies. I think with this information, you can make your choice. Please let me know if you need further clarification. Hope this helps!
Answer: D. Fermata
Reasoning: Composers use a fermata () to indicate that musicians should hold or sustain a note longer than its intended value. Exactly how long to stretch the note is not defined, but a note marked with a fermata can even double in length.
Bedřich Smetana wrote The Moldau