You didnt provide us the information for the book..?
Jack insists on going up the mountain to look for the beast even though it's already dark when they arrive is because in this way, he shows his fearlessness. it also lets him be the first one to be the first to discover the beast. Ralph is not really convinced that everything is one thing or another. on one hand, he is torn between his baser nature that has enjoyed the hunt of the pig and his longing for home as he observes how disheveled everyone is and "how infinite the water is" and the "brutal obtuseness of the ocean"
Option A is correct, hope this helps
