Which sentence from the excerpt from "the open boat" represents a moment of author reflection in which the author conveys a message to the reader? a. "a singular disadvantage of the sea lies in the fact that after successfully surmounting one wave you discover that there is another behind it just as important and just as nervously anxious to do something effective in the way of swamping boats." b. "the correspondent, pulling at the other oar, watched the waves and wondered why he was there." c. "their eyes glanced level, and were fastened upon the waves that swept toward them." d. "as each salty wall of water approached, it shut all else from the view of the men in the boat, and it was not difficult to imagine that this particular wave was the final outburst of the ocean, the last effort of the grim water."