Answer:
Option D, I and II. In an analysis of an author's purpose it should be included an inference about purpose and textual evidence.
Step-by-step explanation:
When analyzing an author's purpose it is necessary to include an inference about purpose, to give the reader a brief explanation of what purpose in writing is, so that the theme of the analysis is understood. Then after stating what is the purpose of the author that is being analyzed, it is important to add textual evidence that supports that statement.