The answer is:
Tone is a literary device that reflects the writer’s attitude toward the subject matter or audience of a literary work. By conveying this attitude through tone, the writer creates a particular relationship with the reader that, in turn, influences the intention and meaning of the written words.
However, though the writer’s tone may reflect their personal attitude or opinion, this literary device may also strictly apply to conveying the attitudes and feelings of a certain character or narrator.
Therefore, it’s essential for readers to look closely at the literary choices made by the writer so as not to unfairly assign a tone to them and to interpret tone judiciously.