Answer:
We decided to leave before it got any worse.
Step-by-step explanation:
Sentence fragments are those groups or words or phrases that are put together to seem like a sentence but they do not form a complete sentence or stand on their own. At times, the sentence may miss a verb or a subject and may even be punctuated to make it seem like a full sentence, but sentence fragments do not express a complete thought.
Among the given options, the statement "We decided to leave before it got any worse" is not a sentence fragment. This is because the statement presents a complete thought or is a full sentence.
Thus, the correct answer is the third/ last option.