Adisease is something that

a. is only caused by radiation
b. affects the normal structure or function of an organism
c. always kills an affected organism
d. is only found in animals besides humans

conditions such as oral thrush or oral herpes viruses can cause the tongue to swell due to inflammation. other medical conditions include tumorous cancer, acromegaly (giantism), amyloidosis, sarcoidosis, hypothyoidism, and kawasaki disease.

explanation:

i would definitly say b : )