Question

what is a dependent clause?
an incomplete thought that does not express the complete meaning of a sentence.
a sentence.
the main idea of a sentence.
a thought that completes the meaning of a sentence.

Explanation:

A dependent clause is a group of words that has a subject and a verb but does not express a complete thought on its own. It cannot stand alone as a sentence. The option "An incomplete thought that does not express the complete meaning of a sentence" correctly describes a dependent clause. A sentence (the second option) is a complete thought. The main idea of a sentence (the third option) is more related to the independent clause. A thought that completes the meaning of a sentence (the fourth option) also describes an independent clause.

Answer:

An incomplete thought that does not express the complete meaning of a sentence.