The correct option is B Parasympathetic autonomic nervous system
Parasympathetic autonomic nervous system (PNS) responses are highly specific, as supported by the direct innervation of target organs. The PNS is inhibitory, and promotes energy conservation. The primary defense strategies supported by the PNS involve energy conservation. PNS activation promotes passive coping strategies, such as withdrawal or disengagement, dissociation and the immobility response. Examples of passive coping styles include physical or emotional withdrawal.