Your answer is lines 2 and 3.
A sentence fragment means a part of a sentence, that is, something that cannot function independently as a sentence.
the correct answer here is "<span> When we stopped by the garden" - option C - it needs more information, information of what happened when we stopped by the garden</span>
Answer: The mountain paths were dangerous and couldn't guarantee a safe travel- for example, mountain lions are a true fact. Also, the climate and weather conditions in mountains were too risky, so they had to go around them
A <span> noun clause plays the role of a noun. So, in the sentence ¨after a quick search, they found where the rabbits lived¨, the complete noun clause is the C. answer: where the rabbit lived.</span>