Question

what is the cause of diabetes-i?
the pancreatic beta cells die.
the insulin receptors die.
the entire glucose metabolism is defective.
the pancreatic alpha cells die.

Explanation:

Type - I diabetes is an autoimmune disease where the body's immune system attacks and destroys the pancreatic beta - cells. These cells are responsible for producing insulin. Without functional pancreatic beta - cells, the body cannot produce enough insulin to regulate blood sugar levels.

Answer:

The pancreatic beta cells die.