Which sentences contain a noun clause ?

C. Whoever said that the early bird catches the worm was right

Explanation:

Noun clauses are dependent clauses (those that do not express a complete thought) that act as nouns in sentences, therefore, they can be the subject, direct or indirect object, predicate nominative, or object of a preposition of a sentence. We can easily identify them because they tend to begin with the words how, that, what, whatever, when, where, whether, which, whichever, who, whoever, whom, whomever, or why.

In sentence C, the noun clause is “Whoever said that the early bird catches the worm” because it is a dependent clause that begins with “Whoever” and function as the subject of the sentence.

im not to sure

d is the best answer for this question.