He doubled up in her arms , then went limp . His body rolled over , his face wedging in the roots of a drift stump . Rin struggled to turn him over again ; small pebbles stuck to the bared front of his body . One hand still clamped over the broad smear of blood .

Question: Why was Rin unable to turn him over ?
Answer: He was trapped in a video game type " freeze " .None of the above choices .He had someone elses blood on him and did n't want to get anything else bloody .He was heavy and difficult to move and was unable to move on his own .