I think the correct answer from the choices listed above is the third option. A clause is an expression that includes a subject and a predicate, so it performs some sort of action within a sentence. A<span> </span>clause<span> is the smallest grammatical unit. Hope this answers the question.</span>
an expression that includes a subject and a predicate, so it performs some sort of action within a sentence
Explanation:
A clause is the part of the sentence which consists of a verb. A subject and a predicate are present in the clause but it does not provide a complete meaning to the sentence. It has some meaning but is not a complete sentence.
