Final answer:
The surge of testosterone during puberty does not stimulate the release of gonadotropin-releasing hormone (GnRH); rather, GnRH initiates the cascade that eventually leads to the production of testosterone.
Step-by-step explanation:
The surge of testosterone that occurs at puberty is responsible for several physiological changes. However, the surge of testosterone does NOT stimulate the release of gonadotropin-releasing hormone (GnRH). Testosterone is actually the result of a cascade that starts with the hypothalamus, which releases GnRH, thereby stimulating the anterior pituitary gland to produce luteinizing hormone (LH) and follicle-stimulating hormone (FSH). LH then stimulates the Leydig cells in the testes to produce testosterone. The secretion of growth hormone, increased protein synthesis in muscle, secretion of oil by sebaceous glands, and spermatogenesis are all stimulated by the surge of testosterone. Therefore, the correct answer is (1) the release of gonadotropin-releasing hormone (GnRH).