Answer: fightorflight

AnswerCrossword Clue
FIGHTORFLIGHTInstinctive reaction
FIGHTORFLIGHTOptions in a primitive stress response
FIGHTORFLIGHTChoice of one who's threatened
FIGHTORFLIGHTKind of reaction to stress
FIGHTORFLIGHTChoice for one whose back is against the wall