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 .
According to the above context, choose the best option to answer the following question.
Question: Why has this person 's body gone limp ?
Options:
A. This person is full of energy .
B. The person is experiencing a life threatening attack .
C. This person is in a safe place .
D. None of the above choices .


B