With reference to the human body, consider the following statements:

Correct Option (d):

Statement 1: The production of somatotropin, also known as growth hormone, increases during physical exercise. This hormone plays a crucial role in promoting muscle development, fat metabolism, and the repair of body tissues, which are all enhanced during and after physical activity. Therefore, statement 1 is correct.

Statement 4: Stress causes the adrenal glands to release an increased amount of cortisol, not a decreased amount. Cortisol is a primary glucocorticoid hormone involved in the body's stress response, helping to regulate metabolism, blood pressure, and immune function. Therefore, statement 4 is incorrect.

Incorrect Options:

Statement 2: Men's testes primarily produce testosterone. While trace amounts of progesterone may be present as an intermediate in steroid synthesis, testes are not a significant source of progesterone production in males. Progesterone is predominantly a female hormone produced by the ovaries. Therefore, statement 2 is incorrect.

Statement 3: Women's adrenal glands produce androgens such as dehydroepiandrosterone (DHEA) and androstenedione, which are precursors to testosterone. However, the primary source of testosterone secretion in women is the theca cells of the ovaries, not the adrenal glands directly secreting significant amounts of testosterone. Therefore, statement 3 is incorrect.

Based on the factual assessment:

• Option (a) is incorrect because statements 2, 3, and 4 are incorrect.
• Option (b) is incorrect because statements 2 and 3 are incorrect.
• Option (c) is incorrect because statements 2 and 4 are incorrect.