The student who would be most helped by using a thesaurus is, Aidan is looking for synonyms for the word flat.
What is thesaurus?
Thesaurus is a book which has the list of words which have related concepts or synonyms.
Because thesaurus is a book which has the list of words which have related concepts or synonyms. Thesaurus is used to find and organize a collection of words for references and to get information about a particular concept, so here as Aidan is looking for synonyms for the words flat, thesaurus would be helpful for him.
Hence the correct option is, Aidan is looking for synonyms for the word flat.
To know more about thesaurus:
https://brainly.com/question/2116805
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