The correct option is D A-(iv), B-(iii), C-(i), D-(ii)
The hypothalamus is located in the forebrain and is the basal part of the diencephalon. The hormones secreted by the hypothalamus can be classified as releasing or inhibitory hormones. Somatostatin, also known as growth hormone inhibiting hormone is secreted by the hypothalamus. It inhibits the secretion of growth hormone by the pituitary gland.
Gonadotropin releasing hormone (GnRH) is a releasing hypothalamic hormone which stimulates the release of gonadotropins by the anterior pituitary gland.