Hope this helped I. could not write on this so here
Plural
Singlar means one as in kid
Plural means many as in kids
So a noun clause is a dependent clause that acts as a noun. Noun clauses begin with words such as how, that, what, whatever, when, where, whether, which, whichever, who, whoever, whom, whomever, and why. Noun clauses can act as subjects, direct objects, indirect objects, predicate nominatives, or objects of a preposition.
The answer is Notary, so you do have the answer correct.