Final answer:
The appropriate tone in a piece of writing is established through the author's attitude.
Step-by-step explanation:
The appropriate tone in a piece of writing is established through the author's attitude. The author's attitude refers to their feelings and opinions towards the subject matter, which are conveyed through the choice of words and the style of writing. By adopting a specific attitude, the author can influence the reader's emotions and perceptions, helping to lock in their message.
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