"the yukon lay a mile wide and hidden under three feet of ice. on top of this ice were as many feet of snow. it was all pure white, rolling in gentle undulations where the ice-jams of the freeze-up had formed." which explanation best describes the movement of the snow in the passage? a. the snow is moving in a wave-like fashion. b. the snow is jolting back and forth. c. the snow is growing deeper at an alarming rate. d. the snow is moving chaotically.