Heart of darkness; which of the following excerpts from the text most clearly illustrates how marlow’s reactions to life in the congo support one of the story’s recurring themes?

a) "native mats covered the clay walls; a collection of spears, assegais, shields, knives was hung in trophies."
b) "he did not ask me to sit down after my twenty-mile walk that morning."
c) "it was a unreal as everything else—as the philanthropic pretense of the whole concern"
d) "i couldn’t possibly imagine what i had in me to make it worth his while."