Answer:
The statement that most clearly describes why an author creates a particular mood in a story is to help readers understand the context
Explanation:
The mood is a literary device that authors use to engage the reader into the story, this can create emotions and reactions that give a better comprehension of what is happening during the events in a story, not only the specific actions but the motivations, intentions, and emotions of the characters which give the reader a bigger picture of all.
I believe the correct answer is expert testimony. An expert is a person who is qualified by education or experience (or both) on a particular subject, has specific knowledge that is validated and relevant. The expert gives an opinion, but this opinion is supported by facts. It doesn't rely on any kind of subjective estimation, or statistical knowledge, as the case may always be an atypical one.
