The phrase "author's purpose" refers to the reason or intention behind an author's decision to write a text. It is the ultimate goal or motive that drives the author to express their thoughts, ideas, or opinions in written form. It is not necessarily related to a thesis statement that makes a claim or the evidence an author provides to support their claim. While an author's feelings about the topic of the text may influence their purpose, it is not an accurate description of the phrase itself. Therefore, the correct answer is: the reason an author writes a text.
