Question

Which best describes how diction contributes to a writer’s style?
Diction is the dialogue a writer uses to develop characters.
Diction is the way that a writer varies sentence structure.
Diction is the manner in which a writer arranges words and phrases.
Diction is the language a writer chooses to express an idea.

Answer 1

"Diction is the language a writer chooses to express an idea." This is correct — diction refers to a writer's choice of words and level of language (formal, colloquial, etc.), which shapes style.