What system is responsible for hormone production in the body?

The endocrine system is the correct answer because it is specifically designed for the production and secretion of hormones, which are chemical messengers that regulate various physiological processes in the body. This system includes a network of glands such as the pituitary gland, thyroid gland, adrenal glands, and pancreas, among others, each of which produces different hormones that can control metabolism, growth, mood, and reproductive functions.

The central nervous system primarily focuses on processing and transmitting information through electrical signals and does not have a direct role in hormone production. While the muscular system is involved in movement and support of the body, it does not produce hormones. The circulatory system, on the other hand, is responsible for the transport of hormones and other substances but does not synthesize these hormones. Therefore, the endocrine system stands out as the primary system for hormone production in the body.