Final answer:
Among the choices provided, Hashimoto's thyroiditis is an example of an organ-specific autoimmune disease targeting the thyroid gland, which makes it the correct answer.
Step-by-step explanation:
The question asks for an example of an organ-specific autoimmune disease. Among the options provided, Hashimoto's thyroiditis is an organ-specific autoimmune disease as it primarily affects the thyroid gland, with the immune system targeting the tissues of the thyroid. Systemic lupus erythematosus (SLE) and rheumatoid arthritis are examples of systemic autoimmune diseases, which affect multiple organs and tissues throughout the body. Type 1 diabetes is also an organ-specific autoimmune disease as it targets the insulin-producing beta cells in the pancreas. Therefore, the correct answer is b) Hashimoto's thyroiditis.