Answer:Alliteration
Explanation: An Alliteration is a repeating word with the same letter, typically created with consonants but can be used without. An example of an alliteration would be: Timmy took tiny steps, The three T's would be the alteration.
An Onomatopoeia is where the word is a sound such as: BOOM or CRASH
While an Metaphor is referencing something such as: That boy is a pig
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D. Being prepared to argue
I would say that the line which implies the author thinks Helen's behavior is going to hurt Helen herself is Don't cut your fingers with the edge / Of your keen wit
Because her mind and behavior are going to hurt her, or rather make her hurt herself.