An author's idiolect is best reflected in text through which feature?

• A. A Spelling variations that reflect individual speech
• B. B Frequent use of passive voice
• C. C Use of idiosyncratic vocabulary and syntax
• D. D Use of third-person narration

Answer: (C)

An author's idiolect is expressed through their personal language choices—especially the specific vocabulary they favor and the way they construct sentences. This combination of word selection and syntax creates a distinctive voice that readers recognize across a writer’s work. The option that best captures this is the use of idiosyncratic vocabulary and syntax, because it directly reflects the writer’s unique patterns of expression. Spelling variations can hint at pronunciation or dialect but don’t define the writer’s voice as clearly. Frequent use of passive voice is a stylistic tendency, and third-person narration concerns viewpoint rather than the writer’s individual language choices.