What does this metaphor mean? “My aunt, a little oyster, a little piece of meat on an open shell for us to look at”

By comparing their aunt to an oyster, the narrator is saying that the aunt is  defenceless/an open book.

Explanation:

To understand this metaphor, you first need to understand an oyster. Oysters have hard shells around a soft piece of meat- the shell is protecting the living oyster inside. By saying that the aunt is a little piece of meat on an open shell, the narrator is saying that the aunt's walls are broken down. The aunt has nothing portecting her- she's an open book. Hope this helps- ask if you want me to elaborate any more!

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explanation:

i believe the answer is thesis, reasons, evidence, counterclaim, conclusion