What happens when a person experiences anxiety about future attacks?
a. a negative feedback cycle is created wherein anxiety about future attacks suppresses the body's emergency response system and catapults it out of control.
b. a positive feedback cycle is created wherein anxiety about future attacks hijacks the body's emergency response system and catapults it out of control.
c. a negative feedback cycle is created wherein anxiety about future attacks controls the body's emergency response system.
d. a positive feedback cycle is created wherein anxiety about future attacks triggers the body's emergency response system and brings it under control.