The exhaustion stage of stress comes from the cycle.

alarm and resistance

The exhaustion stage of stress originates from the first two stages of the cycle of stress,  the alarm resistance. tress,  andOnce alarm ( where the body system is flooded with adrenaline)  is ended, resistance sets in and finally, exhaustion takes over when the body runs out of energy.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

not sure if this is what you'r looking for nnew= nold