Answer
A. Informal
Explanation
Informal outlines can take the form of brief lists of ideas in the order in which you want to discuss them.
“Constance Culmington, he reflected to himself, was exactly the sort of woman who would buy an island and surround herself with mystery! Nodding his head in gentle approval of his logic, Mr. Justice Wargrave allowed his head to nod... He slept..." Chapter 1, pg. 3
I believe it's D, Gines.
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