The author’s view of people who damage national parks can be interpreted to be somewhat forgiving. It is forgiving in that the author most likely feels that those who damage and/or cause destruction to national parks do so ignorantly because as he quotes a park ranger, “…the vast majority of people are just making an innocent mistake” such as taking a small piece of petrified wood or tossing a penny into a geothermal vent.
This is probably more of a soul searching confession than an answer. I do this too. I am always in the look out for new movies, books and quotes of wisdom. I have accumulated such a humongous collection of e-books and movies that I would probably will never be able to finish them if I gave up everything and only binge-watched or binge-read. I keep browsing GoodReads, IMDB, Quora and the likes, for highly rated books , movies, etc.
Correlative conjunction has two equal parts: so in this case it's the answer c: either ...or
other examples of correlative conjunctions would be "not only... but also" or "neither... nor" . Hope this helps! :)
I believe that A would be the correct answer.