The correct option is B Hypothalamus
The endocrine system is not a part of the nervous system, but it is still essential to communication throughout the body. The hypothalamus connects the two important communication systems - nervous and endocrine system. Located at the base of the forebrain, the hypothalamus regulates basic needs such as sleep, hunger, thirst and sex in addition to emotional and stress responses. The hypothalamus also controls the pituitary glands, which then controls the release of hormones from other glands in the endocrine system.