Which statement about voice and style is true? a. there is no difference between voice and style. b. diction, tone, and sentence structure are important elements of both voice and style. c. a writer’s voice and style never change. d. the voice in a literary work is always formal.

B. Diction, tone and sentence structure are important elements of both voice and style.

Style describes the way an author uses words and voice is what describes the author's personality. A writer can change over time and literary voice can be formal or informal. So A, C and D are not correct. Therefore B is most likely to be correct, especially because things like Diction and Tone have to do with what the author's voice and style is.