Which clause is independent?

A.

Even if the closet is the best place for them.

B.

Because I tend to lose things.

C.

There on the table is the box.

D.

Whenever I put them away in a closet.

The answer is C, because for a clause to be independent, it needs to be able to stand by itself as a sentence, so it needs a subject and a predicate and make sense. answer D is incorrect because it does not make sense as a full sentence. To be a full sentence it must tell what you do, when you put them away in the closet.