Which of the following is not presented as a key component to understanding a memoir?
a.
supporting details
b.
theme
c.
key ideas
d.
setting

D). Setting.

Explanation:

A memoir is demonstrated as a biography or a book that factually accounts for the personal experiences of a subject from either the personal knowledge or the personal sources about the subject. It is usually centralized upon a specific theme or element of the subject's life.

As per the question, the component that would not represent a key component in understanding a 'memoir' would be 'setting' as it is entirely based on personal experiences and personal knowledge of the subject and contracted over a specified theme. Thus, 'setting' would not be an essential element for understanding it. Therefore, option D is the correct answer.