Answer:
A complex sentence
Explanation:
A complex sentence is a type of sentence made up of one independent clause (one that expresses a complete thought) and at least one dependent clause (one that can not stand alone as a sentence because it does not express a complete thought).
In this type of sentence, the dependent clause is often introduced by a coordinating conjunction such as even though, when, after, while, because, since, if and until. Here are some examples (independent clauses underlined):
Stay here until I come back
When Sara turned her homework, she forgot to put her name on it.
I like him, even though I don't enjoy being with his family.
