Question

which is the best definition of the word tone?
the reason an author writes a text
words that describe characters emotions
vivid language that describes sensory experience
the authors attitude toward the subject matter and audience

Explanation:

Tone in literature refers to the author's attitude, which can be conveyed through word - choice, syntax, etc. towards the subject and audience. The reason an author writes is purpose. Words for character emotions are not tone. Vivid language for sensory experience is imagery.

Answer:

the author's attitude toward the subject matter and audience