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Answer: Deceptive appearances
In this excerpt, Viola is talking to the captain. She tells him that he appears to be a fair and good person. She states that, sometimes, people who appear to be good are in fact corrupt inside. However, she does not believe this is the case with him. She thinks he is actually as good as he appears to be. Therefore, the passage discusses how people can sometimes have an appearance that does not match their true nature.
The central idea that Viola is emphasizing in these bolded lines from Shakespeare's Twelfth Night is deceptive appearance.
What is a central idea?
A central idea simply means the main idea that's contained in a literary work. It's the underlying message in a story.
In this case, the central idea that Viola is emphasizing in these bolded lines from Shakespeare's Twelfth Night is deceptive appearance.
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