Answer: A) Voice.
Step-by-step explanation: in literature, the voice is the individual style in which a certain author writes his or her works. Voice includes many different literary devices and stylistic techniques, including syntax, semantics, diction, dialogue, character development, tone, pacing, and even punctuation. So, from the given options, the one that can be recognized by the author's use of language, diction and tone, is the voice.