The correct answer is It affects the mood, which affects how theme is interpreted by the reader.
Because authors can utilize diction to convey a subject, diction has an impact on that theme in a novel. Diction is the exact word choices made by an author, and they choose their words carefully to convey their themes. A story's topic, for instance, can be that rash decisions result in catastrophe. Word choices of the author can be used to emphasize this idea. Go more slowly. Speeding and slowing bring to mind the concepts of haste or patience, respectively. Later, the main character can reflect, "She just couldn't wait, could she? No, she had to bolt off without stopping to ponder. Here, waiting and tearing off once more emphasize the theme's ideas.
When writers choose words with the theme in mind, the diction of the text subtly reveals the depths of the issue.
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