Final answer:
A disease disrupting the sympathetic nervous system would likely lead to decreased digestion, as the sympathetic nervous system's normal function is to temporarily inhibit digestion during stress responses.
Step-by-step explanation:
Xarvier has a disease that disrupts the functioning of his sympathetic nervous system. A likely symptom is decreased digestion. This is because the sympathetic nervous system normally inhibits digestion when activated, as its primary role is to prepare the body for 'fight or flight' responses by diverting energy from non-essential functions like digestion to more critical functions such as increasing heart rate and dilating pupils. With a compromised sympathetic system, the functions it usually inhibits, such as digestion, may become less efficient or decreased.