The correct option is D TSH
In Grave's disease (hyperthyroidism), the thyroid is stimulated to produce and secrete large quantities of thyroid hormones as a result of stimulation by thyroid-stimulating immunoglobulins
(antibodies to the thyroid-stimulating hormone (TSH) receptors on the thyroid gland). Because of the high circulating levels of thyroid hormones, anterior pituitary secretion of TSH is turned off (negative feedback).