Answer:
The statement that most clearly describes why an author creates a particular mood in a story is to help readers understand the context
Step-by-step 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.