Question: Your patient is diagnosed with Graves disease. High levels of T3 and T4 are the result of: Need Assignment Help? Question Select one: a. An cancerous process during which lymphocytes and fibrous tissue replace thyroid tissue b. Thyroid-stimulating antibody attaching to the TSH receptor, overriding the normal negative feedback mechanism c. An ingestion of toxins that inhibit the synthesis of the thyroid hormones, causing a goiter d. A viral infection of the thyroid gland that causes overproduction of thyroid hormone