Which line from robinson crusoe best supports the theme of gratitude? a. i smiled to myself at the sight of this money. "o drug! " said i aloud, "what art thou good for? thou art not worth to me" (50). b. so xury and i went to work with him: but xury was much the better workman at it, for i knew very ill how to do it (24). c. no joy at a thing of so mean a nature was ever equal to mine, when i had found that i had made an earthen pot that would bear the fire (109). d. [f]or never man had a more faithful, loving, sincere servant, than friday was to me; without passions, sullenness, or designs, perfectly obliged and engaged (186).