Which of the following bodily changes occurs when the hypothalamus activates the sympathetic division of the autonomic nervous system?

A) The liver reduces the amount of glucose it releases to the muscles.
B) Saliva and mucus dry up, decreasing the size of the air passages to the lungs.
C) The spleen releases more red blood cells to help carry oxygen.
D) The body's metabolism decreases in order to conserve energy for physical action.