What are gonads responsible for?

The correct answer identifies the gonads as the sex glands, which is their primary function. Gonads, which include the testes in males and the ovaries in females, are responsible for producing gametes—sperm and eggs, respectively. In addition to gamete production, gonads also produce sex hormones such as testosterone in males and estrogen and progesterone in females. These hormones play crucial roles in the development of secondary sexual characteristics, reproductive health, and overall sexual function.

The other options do not accurately describe the functions of the gonads. Adrenaline production is the role of the adrenal glands, which are involved in the body's response to stress. Regulation of stressful situations is primarily managed by the hypothalamus and the adrenal system rather than the gonads themselves. Body temperature regulation is largely controlled by the hypothalamus and other physiological mechanisms, not by the gonads. Thus, the primary purpose of the gonads is indeed as the sex glands, making this understanding essential in the context of human biology and reproductive health.