Question

regulatory hormones
where are releasing and inhibiting hormones made?
thyroid gland
posterior pituitary (neurohypophysis)
anterior pituitary (adenohypophysis)
hypothalamus

Explanation:

Releasing and inhibiting hormones are made in the hypothalamus. The hypothalamus produces these hormones which then regulate the anterior pituitary gland. The thyroid gland produces hormones like thyroxine. The posterior pituitary stores hormones (oxytocin and vasopressin) made in the hypothalamus. The anterior pituitary produces hormones like growth hormone, but the releasing and inhibiting hormones that control it come from the hypothalamus.

Answer:

Hypothalamus