I think its A. They establish this section's grim mood. Hope thus helps :D
Well I would say that one of the central themes in Ernest Shackleton's South can be analyzing the complexity of the fight between the individuals and the society along with its "norms", in a world where nature is somewhat relentless towards humans. Hope this helped.
He stuffed his pockets with biscuits.
You would use Have , dose this help is so you can think me by making my answer the brainiest <span />