The correct option is A the dorsal side of the forebrain
The pineal gland is located on the dorsal side of the forebrain. It secretes the hormone melatonin.
Sella turcica is a bony depression in the skull, and the pituitary gland is present in it. The pituitary gland is the master gland, which regulates secretion by most of the other endocrine glands.
The hypothalamus is the basal part of diencephalon in the forebrain. It secretes hormones that regulate secretion from the pituitary gland.
Parathyroid glands, which are four in number, are present on the back side of the thyroid gland. They secrete a hormone called parathyroid hormone (PTH).