The hypothalamus is accountable for monitoring some of the metabolic procedures and other activities of the autonomic nervous system. It discharges and produces some of the neurohormones, known as releasing hormones or hypothalamic hormones, and these in return inhibit or stimulate the secretion of pituitary hormones.
Thus, the correct answer is option A, that is, hypothalamus connects the endocrine and nervous systems and controls the pituitary gland.