Which of the following passages best supports the story's topic of survival

a) timothy warned against going into the water here because the sharks could swim close to the shore
b) i was starting to be less dependent of the vine rope, and sometimes it seemed like timothy was trying hard to make me seem less independent of him
c) using my cane to feel the way, to touch drift wood or coral ledges the night tide might have uncovered
d) i poured some water from the keg, and gave it to him