Which of the following is regulated by the sympathetic nervous system as part of the fight or flight?

None. Fight or flight causes your heart rate to increase, your digestive system diverts it's energy to vital organs (heart, brain, lungs), so that shuts down intestinal motility and the need to deficate or urinate, and your airway opens up to allow more oxygen into the blood. Think about it this way, if a bear was chasing you, do you think your body should worry about going to the bathroom or digesting food? Hope it helps!