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>
2 and 3, that’s my answer
It means that life is good and that you are not concerned about the future!<span />
Student is to school
Person is to family