Respuesta :
The tone of a text is set by the setting, choice of vocabulary, and other.
Plot and theme of a text does not depend on the choice of vocabulary. Setting is already mentioned in the statement therefore the answer which is best suitable is tone.
What is tone?
In literature, tone means mood. The words which are used by author can evoke certain feelings in a person. It can be happy, sad, anxious, horror, etc. The tone sets the mood of a text.
What is vocabulary?
Vocabulary means words. The words present in a particular language is called vocabulary.
Hence, option C is correct.
Learn more about vocabulary here
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