Can someone me with this pe question?

Catalina ate a candy bar and then went on a fast-moving ride in an amusement park. she was sick to her stomach after the ride and now, catalina cannot eat candy bars, because they make her nauseous. in this learned association, the candy bar serves as a(n) to catalina.

Occurs when the immune system attacks the body. lupus cancer sickle cell disease huntingtons disease

Example of health promoting behavior