D. shivering. dilation of capillaries occurs in shock, or lack of blood flow to the body as well as in times of stress, perspiring cools off the body (the patient's temperature is low, not high), and drinking water would also cool off the body.
If David does not have any problems to properly perform his gluconeogenesis or glycogenolysis, which is the formation of glucose from our reserves in the liver, he should have optimal glucose levels.