"Civil rights icon Rosa Parks will forever be remembered for adamantly refusing to give up her seat on a public bus--even after the bus driver insisted, she remained rooted in place."
In the above sentence, what is the part of speech of "adamantly"?
Since adamantly is describing the verb refusing, shouldn't it be an adverb?
Please look in the reference link below :- https://gre.magoosh.com/flashcards/vocabulary/common-words-4/adamant
Please provide references for your answer, if possible.
P.S. My writing skills need work. If you notice any punctuation or grammar problems in my question, please say so!