Final answer:
Voice is the unique style of the writer or speaker, while tone refers to the attitude conveyed in communication. They are interconnected and work together to engage the audience, but they are distinct elements and neither is a subset of the other. Thus voice and tone are unrelated.
Step-by-step explanation:
How voice and tone are related can be understood by recognizing that while they are interconnected, they are not identical. Voice is the distinct personality, style, or perspective of the writer or speaker that comes through in the text or speech. In contrast, tone is the attitude or emotional quality that the speaker or writer conveys through their choice of words and style. Tone can vary even when the voice remains consistent, depending on the audience and situation. For example, a speaker might maintain their charismatic voice across different speeches, but the tone may shift from impassioned in a motivational talk to somber in a memorial address.
Voice and tone are not unrelated, and neither is tone a subset of voice, or vice versa. Instead, they both work together to create the overall effect and engagement with the audience. To answer the question directly, none of the given options accurately describes the relationship between voice and tone. They are related but distinctive components of communication.