A subordinate clause must be combined with a(n) __________ to be a complete sentence. A. phrase. B. subject. C. modifier. D. independent clause.

D. An independent clause

The correct answer for the given statement above would be option D. A subordinate clause must be combined with an independent clause. A subordinate clause is also known as dependent clause. This kind of clause does not convey a complete thought and cannot stand alone; therefore, it needs the independent clause to convey its message.