Answer:
D). Tone.
Step-by-step explanation:
As per the given description, the author's approach or attitude towards a specific subject matter in a story reflected by his/her writing style. It could be humorous or sincere, joyous or depressive, admiring or critiquing, etc. It functions to reveal the point of view, perception, or opinion of the author towards a particular subject. It determines the manner in which the audience perceives a text to evoke the desired response from them. It also functions to keep the interest of readers intact that stimulates them to read. Thus, option D is the correct answer.