Which sentence includes a dependent clause?

A dependent clause is a group of words that contains a subject and a verb but does not express a complete thought. It relies on an independent clause to make sense. In the sentence, "When the sun sets, it gets colder," the phrase "When the sun sets" acts as the dependent clause. It provides a condition or context for the independent clause "it gets colder," but cannot stand alone as a complete sentence. Therefore, this sentence effectively demonstrates the function of a dependent clause within a larger structure. The other sentences consist of complete thoughts that can stand alone as independent clauses, lacking any dependent clauses.