The correct answer is "the adrenal medulla secretes epinephrine and norepinephrine in response to short-term stress".
The adrenal medulla is made of modified post-ganglionic neurons of the sympathetic nervous system. In the event of stress, there will be stimulation of the sympathetic nervous system; thereby stimulating the adrenal medulla to secrete catecholamines such as epinephrine and norepinephrine. These catecholamines work to increase heart rate, decrease digestive tone, etc; beneficial to work on a flight or flight response.