The correct option is C adrenal
Cortisol is secreted from the adrenal cortex. It is a glucocorticoid and it stimulates gluconeogenesis, lipolysis and proteolysis.
Pancreas is a composite gland which secretes insulin, glucagon and somatostatin.
Thyroid gland secretes thyroxine or tetraiodothyronine (T4) and triiodothyronine (T3), which regulates the metabolic rate of the body and maintains basal metabolic rate. It also secretes calcitonin.
Thymus secretes thymosin, involved in providing cell mediated immunity to the body.