The correct option is A Testosterone
Testosterone is a male sex hormone which is secreted at the time of puberty by testes. It is responsible for development of male secondary sex organs and accessory male sex characters. GH (growth hormone) secreted by anterior lobe of pituitary brings about body growth by synthesis and deposition of proteins in tissues, growth of muscles, control of metabolism etc. ACTH (adrenocorticotrophic hormone) is secreted by anterior lobe of pituitary, controls the structure and functioning of adrenal cortex for the secretion of glucocorticoids and sex corticoids. Thyroxine is iodine rich hormone, secreted by thyroid gland. It controls basal metabolic rate (BMR).