Answer:
He lives spontaneously, unlike the narrator.
Explanation:
The camper is a symbol of freedom that the narrator does not have. He is not encumbered by responsibilities.
The Answer is: It is their only way out.
"Yes," replied the Professor, looking at me calmly from under his spectacles, "it is the only chance which remains to us of ever escaping from the interior of the earth to the light of day."
Sentiences 3 and 8 because they express emotional thought other than fact. For sentence three, using "terrible waste" can be debateable and shows more of an opinion. And sentence 8, by using "shouldn't" showing its still a posssiby something can or can not happen.
Not sure but i would say D is the answer.