Hey there,
Your question states: In which disease does the immune system fight, rather than protect, the nervous system?
Your correct answer: [tex]\boxed{Parkinson's}[/tex]
Parkinson's is the disease that does the immune system fight, rather than protect, the nervous system. This would be the reason why we can get sick or not only that but also have a flu or things of that sort.
Hope this helps.
~Jurgen
