The last one is the best answer
A thesis statement is supposed to be in the very first paragraph and reflect the main idea of the entire essay
I assume you mean a simile. A simile is a comparison made by using the words like or as: "Her hair was as gold as a lion's mane", "His beard was like tiny wires brushing her skin."
When asking a question, it's good to provide as much information as possible. If you can provide the paragraph in question, I can edit the answer to address your specific question.
Answer:
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