a cardiovascular disease. an infectious disease. a digestive system disease. an autoimmune disease.
I gave my students this multiple choice question: Juvenile diabetes is a disease caused by the body's inability to create insulin. The body's white blood cells attack the pancreatic cells that produce insulin. This type of disease is known as

Only one answer is correct among these 4 choices:
- a cardiovascular disease.
- an infectious disease.
- a digestive system disease.
- an autoimmune disease.

Could you tell me which one is correct?

an autoimmune disease.