The correct answers are A. Audience, B. Purpose, and C. Tone
Explanation:
The word diction refers to the election or words and the use of these during a text or speech, which is also linked to the style of an author. This election and use of words is unique in each author and varies according to multiple factors including the audience as the author of a text or speech selects the words according to the age, education and social contexts of this; the purpose as the use of language changes if the author wants to inform, explain, persuade or narrate; and the tone, which is the attitude of the author towards the subject he is writing about, for example a positive attitude will lead to the election of positive adjectives and words to refer to the main subject of the text. This also means by understanding the diction the reader can understand better other elements in the text. Thus, it can be concluded the diction gives us clues into the author's audience, purpose and tone as each of these elements influence the election and use of language by the author.
