Protists Cause Four of the Following Diseases

Question

Protists cause four of the following diseases.Which one is the exception?  
A) Dysentery
B) Neurotoxic shellfish poisoning
C) Malaria
D) AIDS
E) Trichomonas infections of the reproductive tract

Accepted Answer

AIDS is caused by the human immunodeficiency virus (HIV), which is not a protist.