I'm stuck between a and d?
According to Dictionary.com, neither coz nor ope is archaic.
Google them and see what you find.
However, one of those words is in common use today, so can't be archaic. Do some research.
I think it’s b because that was the only one that didn’t show up any thing for it being archaic other than this site and this question. All of the other answers where archaic in google. But idk.
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