Answer:
A. Rhett was unwilling to listen to <u>what his friend told him.</u>
C. <u>Whoever said that the early bird catches the worm</u> was right.
Explanation:
A noun clause is a group of words (with a subject and a verb) within a sentence functioning as a noun and normally referring to a fact, event, situation, process or idea. Since this type of clause are nouns, it can be a subject, a direct or indirect object, a predicate nominative, or an object of a preposition, and it can be referred to with pronouns like <em>it</em> and <em>that</em>. Furthermore, many of them begin with the words <em>who, whoever, what, whatever, that, whether, which</em>, and others.
<u>Option A's noun clause is “what his friend told him,”</u> because this clause is acting as the object of the preposition “to.” Furthermore, we can check that it is a noun clause because it can be replaced with the pronoun “it.”
<u>In option C, the noun clause is “Whoever said that the early bird catches the worm”</u> because it is the subject of the sentence, that is, what is being dealt with. Likewise, we can confirm that it is a noun clause because it can be replaced with the pronoun “it.”