Answer:
The sentence "Rachel finished her homework before her favorite show came on" is an example of a complex sentence.
Step-by-step explanation:
A complex sentence comprises an independent clause and one or more dependent clauses. In this sentence, the independent clause is "Rachel finished her homework," and the dependent clause is "before her favorite show came on."
The independent clause can stand alone as a complete sentence because it expresses a complete thought. However, the dependent clause cannot stand alone as a sentence because it doesn't express a complete thought.
In this sentence, the dependent clause "before her favorite show came on" adds additional information about the timing of Rachel's homework completion. It relies on the independent clause to make sense and provide complete meaning.
Therefore, the sentence is classified as complex based on an independent and dependent clause.