____________ is the hypofunction of the thyroid gland, which results in insufficient thyroid hormone, associated with: _________________ an autoimmune disease in which the body's antibodies attack and destroy the cells of the thyroid gland.
a) Hyperthyroidism; Graves' disease
b) Cushing's syndrome; Hashimoto's thyroiditis
c) Hypothyroidism; Addison's disease
d) Hypothyroidism; Graves' disease