Which best indentifies the adverb clause?

A. Have you ever been _to your local historical society_?

B. No, I haven't been to a museum _since my family moved here_.

C. There is _an interesting exhibit_ right now about Native American artifacts.

D. You should come _with my family and me_ to see it.

An adverb clause will meet three requirements:

First, it will contain a subject and verb. You will also find a subordinate conjunction that keeps the clause from expressing a complete thought. Finally, you will notice that the clause answers one of these four adverb questions: How? When? Where? or Why?

Read these examples:

Tommy scrubbed the bathroom tile until his arms ached. How did Tommy scrub? Until his arms ached, an adverb clause. I personally think the best answer is C.

I would say the best answer would have to be letter C.