I'd go with B - Article. There are hundreds of good examples for the answer being B. For example, "a book" ('a' is an article - 'book' is a noun), "an apple" ('an' article - 'book' noun). Those are just the simple ones.
You have us the ENTIRE thing...why didn’t...this is easy
I BELIEVE YOU HAVE SPELT IT CORRECT. IM NOT 100% ON THAT THOUGH