Answer:
1. Digestive system.
2. Respiratory system
3. Nervous system
4. Immune system
Step-by-step explanation:
When you go to the doctor for an illness, the doctor asks you how you feel. You describe all your symptoms. Then, the doctor makes hypotheses about which organ system is having problems.
1. Digestive system: stomach ache, gassy, no appetite.
2. Respiratory system: sneezing all the time, runny nose, trouble breathing, coughing.
3. Nervous system: having a very hard time remembering people's names, feeling sad and anxious.
4. Immune system: seem to be catching every disease that comes around, taking a long time to get a better