Answer:
The correct answer is D. Devise a title and a brief plot outline to give a basic structure to your mini overture.
Step-by-step explanation:
This is the first step in planning your own mini overture because it provides a basic structure and a clear direction for the composition. By creating a title and plot outline, you can organize your themes and ideas into a coherent narrative, and ensure that your overture tells a story and achieves your desired musical effect. Once you have a basic structure in place, you can then move on to arranging your themes, rehearsing the overture, and finally recording it.