The next question refers to this mystery rocks! by cynthia schlagel. the sentences have been numbered to you identify them more easily. this mystery rocks! by cyntha schlagel. (para. 1) 1 the drifting rocks are a strange phenomenon still unexplained by science. 2 located in death valley, california, the rocks sit on hot, flat ground. 3 unlike normal rocks, they have trails etched behind them as if they have traveled across the sand. 4 some trails are only a few feet. 5 some trails are over a half a mile long. 6 each trail is as baffling as the next. (para 2.) 7 the variety of rock movement has baffled scientists for decades. 8 some rocks seem to roll as they move forward. 9 some take unexplainable routes. 10 large ones have traveled past small ones that have stayed still. 11 some scientists suggest that the rocks are pushed by wind. 12 others believe they slide on small amounts of ice or mud. 13 so far, research has not confirmed any theory. which sentence best identifies the main idea of paragraph two? a. scientist are baffled by the different ways the rocks move. b. scientist are confused by the different ways the rocks move, and the theories involving wind, ice, and mud have not been proven. c. scientist have theories on how the rocks move. d. the rocks have stumped scientist because some roll, some take unexplainable routes, and some have traveled past ones that have stayed still, but scientist have theories that the rocks are pushed by wind or slide by ice and mud.