Answer: The first sentence
Third-person omniscient is used to allow the omniscient, or all knowing, narrator to show readers what multiple characters are thinking. This provides the advantage of being able to switch between multiple characters' perspectives. The reader can then interact and relate to multiple characters, and the story can be more depthful.
Answer:
A poem's rhyme scheme is usually marked with letters.
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Answer:
I didn't read the book or know the story but I can imagine that if it is meant to be literal, he/she said it because having the disease made him/her more careful and weary.
Explanation:
It is kind of like what happened with this Corona. We heard about the "disease" and became more weary and careful. Also: sharpened our senses.